How to clean coins using citric acid

Rules and benefits of cleaning coins with citric acid

Cleaning coins with citric acid is carried out if there are various contaminants on the surface of the product that could not be removed in a soap solution. Coins made of copper and silver are subjected to this treatment. They are easy to clean; oxides and serious contaminants can be removed from their surface.

Benefits of citric acid

Mechanical cleaning of coins is considered the most effective; it helps to remove any dirt from the surface of the banknote. But if you don’t have the means to give the coin to a jeweler or there are other reasons, you can try cleaning the coin at home using citric acid.

This processing has a number of advantages:

1. Helps eliminate oxides.
2. Gets rid of heavy dirt.
3. Not capable of harming metal.

Lemon acid

The advantage of citric acid is that it actively interacts with dirt particles and oxides, entering into a chemical reaction with them. At the same time, having reached the metal, the acid practically ceases to act. As a result of cleaning, you can achieve a good result. But acid is still an aggressive compound. Therefore, you should not keep coins in a citric acid solution for a long time, otherwise stains may appear on their surface.

Therefore, only those collection exhibits that are not very expensive should be processed. It is better to give expensive coins to jewelers; they will help clean them of dirt and oxides using mechanical cleaning. Collectors do not recommend risking valuable specimens.

How to clean copper?

Cleaning of copper coins is preceded by soaking in a soap solution. If after this procedure the oxides and dirt on the surface of the copper do not disappear, you should resort to radical action. For the procedure you will need:

• cotton buds;
• toothpicks;
• "lemon";
• water;
• dishes;
• wooden spoon or tongs.

The procedure begins by preparing a solution: citric acid crystals are dissolved in warm water, stirring them with a spoon. There should be about 50 ml of water in the container, the solution is prepared in the ratio: 3 parts water and 1 part acid.

The coin is immersed in water and dirt is removed from its surface using a cotton swab and toothpicks. You can remove the product from the water and try to remove oxides and dirt with a cotton swab dipped in the solution.

If the contamination does not respond, then you can repeat the procedure, but after some time. As a rule, copper is easy to clean, oxides and impurities are removed from the surface, but if this does not happen and green spots remain on the metal, you can try to remove them using a cotton pad or swab soaked in a solution.

But here it is important to know when to stop: acid can cause pink spots to appear on the coin, which will have to be removed in another way.

That is why masters advise not to be zealous and to clean only inexpensive exhibits of the collection with acid.

Copper oxidizes upon contact with moisture, so this metal should be protected from water. After cleaning is completed, you need to rinse the coin under a stream of cold water and wipe it with a suede napkin.

Two more secrets:

1. Acid removes green oxides better.
2. The solution can be changed during processing.

After cleaning, you need to wipe the product dry, which will help determine the effectiveness of the procedure.

Cleaning coins with citric acid

Oxides are easily removed from the surface of copper, but lemon peeling can remove or damage the patina. To restore it, you need to keep the copper on the kitchen grate for several days after cleaning. As a result of the procedure, the patina will look natural. This recovery method is considered the most effective.

How to clean silver?

Cleaning silver coins can be carried out in several ways; it helps to remove dirt of varying degrees of complexity from the surface of the product.

Processing methods:

• boiling with citric acid;
• soak;
• partial processing.

Boiling is the most difficult but most effective method, according to experts. You should first try to clean the coin using other methods; if the resulting effect is not satisfactory, you can resort to boiling.

To do this, you need to choose a dish, an enamel mug is suitable, the acid is dissolved in it in a ratio of 1 to 3. Then silverware is dipped into the solution and put on fire. During the boiling process, you can remove coins and control the degree of their cleaning. Remove dirt using sticks and toothpicks, using them to treat hard-to-reach places. If the plaque is difficult to remove, then you can continue to boil the silver until it is completely clean.

There is no need to worry that the metal will dissolve or become damaged, but if you let the process take its course, this is fraught with consequences.

A less radical method is soaking. Silver is immersed in dishes, periodically checking its condition. You can clean the product with a toothpick without removing the coin from the solution.

The solution should be changed periodically; after the procedure, rinse the silver in cold water and wipe with a suede cloth.

The cloth should not contain fibers or particles that could remain on the surface of the metal.

The average duration of the procedure is up to 30–40 minutes. You can increase the concentration of the solution if necessary.

Partial processing is used for coins that have a high value. These collection exhibits can be cleaned, but the procedure should be carried out with caution.

Step-by-step description of the procedure:

1. A solution is prepared, the concentration is determined individually.
2. Soak a stick or cotton wool in the solution.
3. Apply cotton wool to the area of ​​contamination.
4. Remove dirt with a toothpick.

After the procedure, wash the silver in cold water and clean the surface of the product with a suede napkin.

After the procedure, silver can be cleaned using an old toothbrush with soft bristles. You shouldn't do this with copper.

You should not leave silver in water with citric acid for a long time, this can change the metal, make it dark, and spots will appear on the surface of the silver. The reason for this is considered to be impurities of metals that are part of the alloy.

Most often, the “lemon” copes with the task, but there are other ways that will help remove contaminants from the surface of the metal, these include:

• cleaning in a soap solution;
• cleaning with ammonia and ethyl alcohol;
• oil treatment.

After cleaning, the silver is rubbed with olive oil. This procedure replaces polishing and adds shine to the metal. This is not done for copper.

Treating coins with citric acid, soap solution, rubbing with alcohol or oil. All these methods will help restore shine to the metal and remove oxides and dirt from the surface of the product. But if a coin has a high value, then there is no point in experimenting with it. You can cause damage to the exhibit, which will affect its value.

Source: https://DedPodaril.com/numizmatika/chistka-monet-limonnoy-kislotoy.html

How to clean coins at home with vinegar and salt, citric acid, hydrogen peroxide, ammonia and soda from rust to shine

Old coins found on their own play a special role for a numismatist. But, despite the terrible state of the finds, they are all in excellent condition in the collection.

How to clean coins that have been stored for many years in the soil, on the seabed or in mud? For many people, searching for old things is just a hobby, and they are not willing to pay to restore their finds.

Especially for such cases, we have collected all the necessary information about cleaning coins at home. After reading the recipes below, you can do all the work yourself using available tools.

Should you spend money on a purchase or make do with improvised means?

In workshops, jewelry counters and online stores you can purchase special means for cleaning coins. For example, Leuchtturm is suitable for zinc products. The kit includes detailed instructions, following which you can remove oxides, patina, plaque, rust and other contaminants from the surface. For each alloy, you can choose the best option on the market, which is best suited for this particular case.

Let's not dwell on professional methods; as a rule, they are expensive. You can use traditional methods and deal with the problem just as well.

Cleaning coins at home mainly occurs using the following means:

• Soap,
• Citric acid or lemon,
• "Coca Cola",
• Ammonia,
• Toothpaste,
• Vinegar,
• Sulfuric acid,
• Hydrochloric acid,
• Soda.

Depending on the metal, the products may differ. The method is selected for a specific coin; below we will look at the most common recipes.

List of essentials

Before you start cleaning, you should find something to clean with. To do this, look for the following tools at home:

• Old toothbrush
• Tweezers,
• Toothpick,
• brush,
• And the coin cleaner itself.

Before choosing how to clean coins at home, determine the material from which your product is made. Some methods are not suitable for specific alloys. For example, when processing silver, you should not use abrasives, as they can scratch it. In general, the following are used to make coins:

• Iron,
• Copper,
• Aluminum,
• Zinc,
• Gold,
• Silver,
• Platinum,
• Nickel,
• Chromium,
• Tin,
• Zinc,
• Manganese.

You can also find an alloy of several different metals. Let's look at the most effective methods by which you can clean coins at home.

Chemical exposure

Cleaning using chemical reactions is one of the simplest. To carry it out you will need something from the list: soda, acid, detergent or ammonia.

The first recipe will be using hydrochloric acid. Be careful, in its pure form it can dissolve your find. Therefore, you need to make a weak solution, that is, add very little to the water. Immerse yourself for a few minutes and watch what happens. The dirt should go away on its own, or can be easily cleaned by wiping with a cloth. When removing the product from the solution, treat it with alkali to stop the reaction. Now wipe dry or blow dry.

Another method involves using a regular soap solution. It is the most delicate and suitable for all metals and alloys. Laundry soap is grated or cut into small pieces, then placed in warm water and mixed. The method best removes light stains.

Immerse the coin in the solution for 3-24 hours depending on the complexity of the case. If you hold it longer, nothing bad will happen. Then take it out, wipe it with a soft cloth and wipe dry.

You can enhance the effect by adding a little soda solution, but it is important that the soda dissolves completely before contacting the soap.

Copper products can be easily cleaned with baking soda. To do this, add water in such an amount that, when stirred, you get something like a slurry. Rub the coin with it and leave for 10-20 minutes. Then use a toothbrush to clean the surface from rust, oxidation and other contaminants. A similar solution of soda can extinguish the chemical reaction of hydrochloric acid.

There are several ways to clean coins using vinegar. First, the product is washed in cold water, wiped with table vinegar and left for 5-10 minutes. Then they wash it again, but in warm water and dry it.

Another method is suitable only for well-preserved specimens. Add a spoonful of soda to the vinegar and immerse the dirty penny inside. Leave it there until the dirt comes off. Then wash in warm water and soap and dry.

For particularly valuable items and items made of platinum, gold and silver, it is better to use a regular soap solution.

Silver and copper items can be cleaned with ammonia. To do this, simply immerse in the product until the dirt soaks and rinse with clean water.

See also video instructions:

Electrolysis method

Cleaning coins by electrolysis is one of the fastest. But there is one caveat: the safety of the products and your health is not guaranteed. If you do not take into account this small minus, the method has the right to life. The bottom line is this: an electric current will pass through a weak solution of salt in water. The procedure should be carried out in a room that is well ventilated and has sufficient lighting. Remember your own safety, wear glasses and gloves.

To carry out cleaning you will need a special electrolysis apparatus. If you don't have one, you can do it yourself. First, find a power supply with a voltage of 6-12 volts. An unnecessary but working mobile phone charger or battery will do. The end is cut off, separated, the insulation is removed from the ends, and small veins (but not wires) are twisted together.

To the found power supply you need to attach two clamps, a metal object and a glass. Make a saline solution at the rate of 1 tablespoon per liter of clean water.

Let's move on to cleaning coins using electrolysis. To do this, one clip is attached to a coin, and the other to a metal object. Both wires are dipped into the prepared liquid. Immediately after contact with water, the process will begin, possibly hissing, gas evolution and rapid turbidity of the solution. When the power supply is plugged in, do not touch the water with your hands. Cleaning usually only takes a few minutes. Unplug the device from the outlet, remove the structure and rinse it with clean water.

If the cleansing is not complete, the process is repeated, but a fresh saline solution is needed. By the way, to avoid a short circuit, try not to connect the two wires.

Mechanical restoration

Do-it-yourself mechanical cleaning of coins is suitable for contaminated coins of low value. Because there is a serious risk of damage to products, especially antiques. The process often uses needles, brushes, scalpels, tweezers, dental sticks, etc.

Professionals can clean perfectly with this method, but beginners often cause damage. Therefore, if the finds are of any value, it is better to start with the cheapest one.

Heat treatment using boiling water is popular. It is important that the metal does not go through sudden changes in temperature. Immerse in boiling water slowly using tweezers and leave there for up to ten minutes. Thus, you can only do this with low-value items, since the patina that gives the coins its special value is often lost in the process. It is better not to subject products made of precious metals, old, rare coins of the USSR to such violence.

Coca-Cola will help clean the coin from oxidation, rust and other dirt. Depending on the complexity, it may take from one day to several weeks. The method can be called the longest of all. But you don’t need to do anything at all, just immerse it in liquid and leave it for the required time. If the Cola is warm, the process will speed up. The higher the temperature, the faster the cleansing will occur.

Sometimes coins are cleaned with a regular dental stick or needle. It is important not to scratch the design and surface. It helps to moisten the product in hydrogen peroxide before the procedure. Then the oxide lags behind the metal more easily.

Particularly valuable items made of silver and gold require a different approach. It is easy to damage them and reduce their value significantly, especially if the coin is old. Gold is cleaned with ordinary soap solution, since it is practically not subject to rust and oxides. The situation with silver is completely different; it is easy to damage.

Therefore, aggressive methods are not used against him. For low-grade silver, a special substance called Trilon B is used. Optimal means for cleaning high-grade silver coins: ammonia, soda solution, toothpaste without abrasive particles. Ideally, make a mixture of all three and apply to the surface.

After 10-20 minutes, rinse and wipe with a soft cloth.

Copper and cupronickel coins are washed with plain water or soapy water. The above methods will easily damage the valuable layer of patina that covers the surface.

How to dry coins correctly

Even the best cleaning of coins until they shine can lose most of the result if they are not dried properly or not. The appearance and its safety depend on how the specimen was dried.

Ideally, you will need a dry paper towel; place the product on it after wiping with a soft natural cloth. But you need to at least wipe it dry. Otherwise, the coin may quickly rust.

Source: https://comp-plus.ru/uborka/chistka-monet-v-domashnih-usloviyah-ot-rzhavchiny-okisleniya-chernoty-i-gryazi-do-bleska

Cleaning copper with citric acid - Metals, equipment, instructions

In the old days, copper was often used to make coins, which today are considered rare and are of great value to collectors and numismatists. But this metal is characterized by its tendency to form patina and various oxides.

Patina is a beautiful greenish coating on a copper product. It gives things a noble appearance and is valued by specialists. As a rule, it is not removed from the coin.

But behind the oxides, dirt and grease, it is often impossible to even discern what kind of coin it is, its denomination, and year of issue.

Soviet copper coins

Before deciding to clean your coins, you should clearly understand what materials they are made of. If you have to process several pieces, and there will be specimens made of copper and bronze, then they absolutely cannot be placed in the same solution together. If you plan to further sell coins on the antiques market, then it is better not to clean them at all, since a product without patina will be devalued.

Effective ways to clean coins

There are many ways to clean copper coins at home. But if there is no experience, and the product is valuable, then it is better to use the services of a specialist, since the structure of the metal can easily be damaged.

Mechanical cleaning of copper

Professionals clean coins using this method; they have many different devices in their arsenal, similar to dentist’s tools:

Mechanical cleaning of a coin

• incisors;
• needles of various sizes;
• scrapers;
• brushes of different hardness.

There is also something similar to a drill available.

Using hand and mechanical tools, the layer of dirt and oxides is carefully removed, millimeter by millimeter.

At the same time, the master tries not to damage the product itself and its noble patina.

Cleaning scheme:

Soaking coins in distilled water

• Soak the products in distilled water for an hour. This process will remove dried-on dirt and desalt the coin;
• impregnated with synthetic resin. This is necessary to strengthen the noble patina, and also so that subsequently there are no cavities or other damage;
• proceed directly to mechanical cleaning using tools.

This process is quite painstaking and lengthy. Therefore, there is no need to rush and make great efforts. The main thing here is attentiveness and patience. Some especially valuable coins are cleaned by a specialist within two months.

Ammonia

This cleaning method is used when the coin is coated with strong green oxides. It is very efficient and fast. But, using ammonia, you can damage the patina and damage to the product will become visible.

Ammonia or ammonia solution

What you will need:

• ammonia solution 5–15%;
• water;
• glass beaker;
• non-metallic tweezers;
• a protective face mask for safety, since ammonia vapors have a pungent and unpleasant odor.

Scheme of work:

• First, the coin is placed in a glass with ammonia using tweezers;
• periodically you need to rotate the copper product;
• When the cleaning process is completed, you cannot remove it from the solution, otherwise, treated with ammonia, it may deteriorate in the air. It is necessary to gradually add water to the container until the ammonia content becomes negligible. Only then take out the coin.

Boiling coins in soda solution

A simple and common method.

Boiling coins in soda solution

For it you will need:

• soda – 3–5 tablespoons;
• water – 0.5 l;
• pot;
• Toothbrush.

Stages of work:

• prepare a solution: add soda to water;
• place coins in the liquid. You should not process many products at the same time. They need to be covered with at least 2 cm of water;
• put the pan on the fire and cook for 30 minutes;
• take out the coins and clean with a toothbrush. In this case, there is no need to apply force so as not to damage the noble patina.

Cleaning copper coins in 3 minutes

Acetic acid perfectly removes oxides from coins. But at the same time it acts quite aggressively, it can damage the patina and open cavities and chips.

Source: https://spb-metalloobrabotka.com/chistka-medi-limonnoy-kislotoy/

Cleaning coins with citric acid: advantages and method

Methods for cleaning coins depend on the material from which they are made. If we talk about gold and silver, they most often do not require special cleaning. It’s another matter if the antique product is minted from copper, brass or bronze. Cleaning coins with citric acid is an effective and popular method.

Advantages of citric acid

You can use citric acid if you cannot take antique collectibles to a jeweler. The cleaning method has several advantages:

1. Removes oxides from the product.
2. Removes heavy dirt.
3. Does not harm metal.

Before and after cleaning with citric acid

The main thing when cleaning metal with this method is the need to keep track of time. The solution may leave unsightly stains on it, but only if the coin is kept in acid. During simple cleaning, the main advantage of the method is a good result.

Cleaning Copper Coins

The first stage of cleaning collectible metal is a soap solution. It will remove the main types of contaminants and prepare the product for basic cleaning. For the procedure you need:

1. Cotton buds.
2. Lemon acid.
3. Toothpicks.
4. Dishes that do not react with acid.
5. Water.
6. Wooden spoon.

You will need one part acid to three parts water. The water to dissolve the substance must be warm. It is necessary to lower the copper product into the resulting liquid and remove all contaminants using cotton swabs.

If it doesn’t work out the first time, then it is possible to repeat the procedure, but in this case you need to wait some time. Green oxides are best removed.

It is important to remember that if a particular exhibit is kept in an aggressive solution for too long, then unpleasant pink spots will appear on it.

Finally, rinse the item under running cold water and wipe dry. It is advisable to do this with suede material. If a copper product has a decorative patina, then it is important to know: citric acid can damage the film. To restore the appearance of a patina coin, after processing, you need to place it on a kitchen counter for a couple of days. Copper products require cleaning, most often inexpensive ones, since exclusive models will deteriorate.

Cleaning silver coins

Silver coins can be cleaned using citric acid in several ways. You can soak the products, or you can boil them in its solution. In case of slight contamination, cleaning is carried out partially.

Boiling a coin is only necessary if there is no other way to clean it. The procedure is carried out in an enamel container, where the acid is diluted with water in a ratio of 1:3. After boiling, the coins are periodically pulled out to see the result of cleaning.

An acid solution in the same proportion is also used for soaking. It will take about forty minutes to keep the product in it. You can make the cleaner more concentrated to make cleaning faster.

For local cleaning, you will again need a cotton swab and a toothpick. You need to press a cotton swab, previously soaked in the solution, to the area of ​​contamination, and then clean the dirt with an ordinary toothpick.

Cleaning collectibles or treasure items requires professionalism. If you are not sure of your capabilities, then contact a jeweler. A professional jeweler will clean any expensive metal using special means.

Cheaper specimens are cleaned at home using a simple aggressive environment that can be created from improvised means. This will save time and money.

But in any case, it is necessary to be careful and careful not to harm the collection material or create new stains.

Source: https://DedAntikvar.com/numizmatika/kak-pochistit-monety-limonnoj-kislotoj

Cleaning coins with citric acid

All coins, especially copper ones, turn black over time. One way to remove oxide and other types of contaminants is to clean coins with citric acid. This is the fastest and easiest way to return metal money to its original appearance. In this article you will learn how to properly clean coins using acid. You will also become acquainted with other effective means and methods of their use.

What do you need to know about cleaning coins with citric acid?

Before starting work, pay attention to the metal from which the coin is made. If it is of great value to you, then do not take risks and contact specialist jewelers. In most cases, you can clean coins with citric acid yourself at home.

How to clean coins with citric acid?

Silver and copper coins are cleaned differently using citric acid. Determine the metal of your coin and get started using one of the methods described below.

Cleaning Copper Coins

In this case, you need to use this method with extreme caution and act strictly according to the instructions. If you do everything correctly, then all dirt and stains will disappear right before your eyes.

To work you will need:

• not a metal container for the solution;
• lemon acid;
• water.

The technology looks like this:

1. Fill the container with water.
2. Pour in the acid crystals - choose the concentration of the solution yourself, based on the degree of contamination of your item.
3. Stir until the acid is completely dissolved.
4. Place a coin in the solution.
5. Wait until one side acquires a characteristic copper color.
6. Turn over to the other side and repeat the procedure.

Important! Citric acid removes all traces of oxides on copper, but it also removes patina. You will need to restore it yourself.

To restore patina at home, follow these instructions:

1. Place the cleaned item on the back of a kitchen vent.
2. Keep it there for a few days.

Important! After such actions, the patina looks natural and beautiful. It lays flat without any additional effort on your part, unlike other methods.

Cleaning silver coins with citric acid

For such a metal, citric acid is practically safe. Silver dissolves very slowly in acid, but plaque and oxides disappear much earlier.

To make cleaning silver coins with citric acid quick and easy, you will need:

• ceramic or plastic bowl;
• warm water;
• lemon acid;
• Toothbrush.

The technology of the restoration procedure looks like this:

1. Take 1 tbsp. warm water.
2. Dilute 2 tsp in it. citric acid.
3. Immerse a coin in the solution for 10 minutes.
4. Take it out and scrub it with a toothbrush.
5. Softened dirt and oxide can be easily removed with a brush without causing harm to the body of the object.

Important! Do not leave the product in the solution for a long time. Control the process.

How to properly clean coins with soap?

The question of what soap to use and how to properly clean coins is most often asked by those who value their item very much and do not want to cause even minor damage. This product is ideal for removing various types of dirt and restoring the attractive appearance of the product. It is recognized as the safest and most delicate.

Cleaning with soap is suitable for coins made of any metal, but is one of the most labor-intensive and time-consuming processes. The thing is that the solution of this product, as a slightly alkaline medium, gently and slowly affects formations on the surface.

Important! Be prepared that the entire procedure may take several months.

What soap is suitable for cleaning coins?

To work with coins, choose only laundry soap. Other grades contain many different impurities, which can adversely affect the coating of coins. Moreover, the darker the soap, the better, the faster and better you will clean your coins.

To clean coins with soapy water you will need:

• soap;
• water;
• solution container;
• soda;
• hard small brush.

How to clean coins with soap?

To achieve good results, follow these step-by-step instructions:

1. Prepare a soap solution.
   • Fill a non-metal container with water.
   • Grate the soap and place in water.
   • Boil the solution over low heat until a homogeneous thick mass is obtained.
2. Remove the solution from the heat and place the coins in it.
3. Leave the items to clean in the solution for a day.
4. Take them out and rinse them with warm water.
5. Scrub with a brush and rinse again.
6. If you didn’t succeed in removing all the dirt from the objects the first time, repeat the process. The resulting solution can be used several times.
7. After removing all stains and oxides from the surface, treat the entire surface with baking soda using a brush - this will protect it from the appearance of white soap residue that will inevitably appear after such cleaning.

How to properly clean coins with oil?

Another method of cleaning coins from plaque is using oil. You can take any oil: vegetable, Vaseline and others. You will need:

• container in which the coin will be “cooked”;
• oil;
• brush;
• coin.

This cleaning of coins is done as follows:

1. Pour the oil into the container.
2. Place on low heat and boil.
3. Place your coins at the bottom of the container.
4. Boil until all unwanted stains disappear.
5. Remove the container from the heat and cool the contents.
6. Brush the items and rinse with warm water.

Important! Be careful when working with hot oil as there is a risk of burns if not handled carefully.

Alternative methods for removing oxides and dirt

Compared to all previous methods, cleaning with kefir is less dangerous, but longer. For this reason, this technology is not very popular, but still finds adherents. For this method you will need:

• fresh kefir or other similar product;
• ceramic deep plate;
• a brush with stiff bristles.

Items are processed as follows:

1. Pour kefir into a plate.
2. Place coins in it.
3. Keep them there for several hours.
4. Rinse in running water and wipe with a brush.

Cleaning copper coins using electrolysis

This method requires your attention and caution. When used correctly, your products will be cleaned right before your eyes. You will need:

• cup;
• cold water;
• AC/DC adapter;
• stainless steel spoon;
• clamps;
• salt and soda.

Important! Take the adapter from an old phone, and purchase the clamps at any radio parts store. Please note that using electrical appliances when cleaning coins requires attention and concentration. If you are negligent, you can get injured.

For safe and high-quality work, follow the instructions:

1. Attach the clamps to the exposed wires of the adapter.
2. Pour water into a glass.
3. Add salt to it and stir.
4. Connect the negative wire to the coin using a clamp.
5. Connect the clamp with a positive charge to the spoon.
6. Immerse both objects in water so that they do not touch each other.
7. Turn on the adapter.
8. Watch as the water around your appliances darkens with dissolving dirt and oxide.
9. Turn off the device and remove the coin.
10. Treat it with baking soda and rinse in clean water.

A universal way to clean any coins

If you cannot determine exactly what metal or alloy your product is made of, use the method described below. You will need the following tools:

• ammonia;
• toothpaste;
• soda and soap;
• water;
• container for solution;
• Toothbrush.

Important! To be effective, ammonia is mixed with other effective agents. Such a solution is capable of dissolving the brilliant green, rust and other oxides that have formed on the body of the coin.

How to use these tools:

1. Prepare soap and soda solutions.
2. Take 50 ml of each and mix.
3. Add to them 150 ml of toothpaste and 50 ml of ammonia.
4. Place all items that require dirt removal into the mixture.
5. Keep them in the solution until they are clear.
6. Remove and wipe with a brush periodically.
7. At the end of the procedure, rinse with running water.

Useful tips

1. If possible, contact specialists when it comes to valuable products made from expensive metals.
2. Try not to rush when choosing means and processing methods, give preference to mechanical and delicate ones.
3. Store valuables correctly, taking into account all the instructions of specialists in this field.

material

Now you know about all the possible ways to clean coins at home. Use these tips carefully and carefully and you will be able to restore the attractiveness of items without damaging them.

Source: https://serviceyard.net/sovetyi/chistka-monet-limonnoy-kislotoy.html

Cleaning Copper Coins

Before you start cleaning, you should once again pay attention to the material of the coin, this is due to the fact that copper, silver, nickel and brass must be cleaned using different methods.

The most important thing when cleaning is not to do any harm. The main assistant in any business is experience. And when it is not there, it is very difficult to achieve a good result on the first try. And when cleaning antique copper coins, you often don’t have enough coin - another one to experiment with. Below are the most common ways to clean coins at home. Not all of the above methods are safe for coins, but nevertheless, all the known ones are collected below.

If the coin is valuable, but there is no confidence in the result of cleaning, then it is better not to clean it at all or contact a professional.

Cleaning copper coins with soap

Perhaps the safest way to clean a coin. The main disadvantage is the time; it can take several months (possibly years) to put the coin in order. The essence of the method is that the soap solution, as a slightly alkaline medium, slowly and fairly gently dissolves copper oxides on the surface of the coin.

Preparation of soap solution

In order to prepare a solution in which we will clean copper coins (other copper objects coated with oxides), you need to grate soap (preferably laundry or baby soap) and brew it with boiling water. After an hour or two, the solution will begin to thicken and take on the consistency of ketchup or toothpaste.

The actual cleaning process

Coins are immersed in the prepared solution one at a time so that before they cake at the bottom of the jar they are evenly covered with soap. The coins remain in the solution for at least a day or up to a week.

Next, the coins are taken out and washed with warm water, the plaque on the surface is cleaned off with a toothbrush with the bristles cut off for rigidity. If the green ones remain, the process must be repeated. The soap solution can be used several times. As a rule, the coin is not cleaned the first time.

In the best case, cleaning takes a week during which the coin has to be removed from the soap 3-7 times. There may be dense oxides that can be cleaned off within six months.

After the coin is completely cleaned of oxides, it must be cleaned with baking soda using the same toothbrush, this is necessary so that there is no white residue left on the coin from soap, which gets into the pores and spoils the appearance.

Two kopecks from 1882 were cleaned with soapy water. The oxides were less durable than in the first example and were cleared off in 10 days.

In principle, we can finish here, but we can improve the appearance of the coin a little more. To do this, rub the coin on a woolen cloth or felt. After this treatment, the relief of the coin will be more clearly visible.

And at the very end, before sending it to the album, you can rub the coin with Vaseline. This will improve the appearance a little more and preserve the coin to some extent.

Citric acid for copper is a highly destructive reagent and you should think very carefully before using it. As a result, you can not only not improve, but also greatly worsen the appearance of the coin and its value. At the same time, citric acid is one of the best options for cleaning silver coins.

The 1875 penny before cleaning with citric acid looked quite ordinary, but the cleaning process can hardly be called such; the coin was practically destroyed in a few minutes in acid.

Cleaning copper coins with ammonia

The method is quite cruel for copper coins, as it significantly destroys the surface. But for the case when the coin is unevenly covered with a very strong green oxide, which does not take soap, ammonia can be used.

This 1903 kopeck was paid for 10 minutes. The result is certainly not excellent, but very persistent oxides were quickly removed.

The cleaning process itself is that the coin is completely immersed in ammonia, kept there for another minute, then taken out and cleaned with a toothbrush. Since ammonia corrodes oxides very quickly, it is better to take out the coin and clean it more often; it is also worth putting it on different sides each time.

Electrolysis

Cleaning copper by electrolysis is only possible when the coin is not severely damaged and the oxides have not corroded deep cavities in the coin. This requirement is due to the fact that when cleaning by electrolysis, all imperfections will appear very clearly on the coin.

Two kopecks from 1924 were purified by electrolysis. A solution of baking soda was used as an electrolyte, and a charger for a car battery (12V, 2A) was used as a current source. Cleaning time 5 minutes.

Electrolysis cleaning technology is that a coin is attached to the “-” (cathode) of a direct current source, and either a graphite element or any object made of the same material as the coin itself is attached to the “+” (anode). Next, the anode and cathode are immersed in the electrolyte and current is applied. As an electrolyte, you can use a solution of baking soda in water (2 tablespoons per liter). The cleaning process takes from several minutes to an hour depending on the size of the coin, its condition and the power of the current source.

A fairly simple and quick technique for cleaning copper coins. The name itself almost completely describes the technology. Copper coins are boiled in a solution of soda and water. The solution is made quite concentrated: 3-5 tablespoons of soda per half liter of water. The solution should cover the coins by 2 cm. This is necessary so that the coins do not appear from the solution during the cleaning process. The cooking itself should continue for 30 minutes. Then remove the coins from the solution and clean them with a toothbrush and a paste of the same soda.

The 1910 kopeck was cleaned by boiling it in soda for 30 minutes. The result is not bad at all: green oxides were completely removed and the patina layer was not damaged. The fact that irregularities and cavities have opened up on the coin’s field is rather a drawback of the coin itself, and this negative effect from cleaning could have occurred with any other method.

Cleaning with vinegar

Acetic acid, like any other, is suitable for cleaning copper coins. A limitation of its use is that this method damages the patina and exposes cavities and other irregularities in the field of the coin. For cleaning, use a solution of vinegar in water with a strength of 7-20% from any grocery store.

These 10 flights from 1892 were immersed in acetic acid for 15 minutes, then brushed with a toothbrush. It is clearly noticeable that the patina on the coin is damaged in places and will need to be applied artificially, but the green oxides were quickly removed.

Cleaning with Trilon-B

Trilon-B (ethylenediaminetetraacetic acid disodium salt) is a special cleaning agent designed to make most insoluble metal salts soluble. Thus, oxides and patina are easily washed off from the surface of the coin in a Trilon-B solution.

Trilon-B cleans coins coated with uniform oxides well.

But if the oxides on the coin have a different structure, then as a result of cleaning on some surfaces the coin is cleaned to a shine, while on others the oxides continue to persist, in this case it is necessary to resort to artificial patination after cleaning.

The main advantages of cleaning with Trilon are:

• trilon does not destroy the metal of the coin, as acids and alkalis can do;
• high cleaning speed - cleaning a copper coin takes a few minutes, in severe cases a couple of hours.

Two kopecks of 1841 had fairly uniform oxides, which were easily cleaned off with Trilon. But the 1836 penny was covered with oxides of varying densities, and when cleaning, the oxides were removed quickly from part of the coin, and slowly from the other part. Thus, part of the penny coin has acquired a copper metallic sheen and requires patina.

Mechanical cleaning is a special process for restoring coins in which the coin is not cleaned, but rather cut out or restored in a layer of oxides.

For such a reading, the decisive factor is the experience and hard work of the master. The technology can be described very primitively as follows:

• The surface of the coin is desalted and cleaned of dried dirt in distilled water;
• All oxides, including loose ones, are strengthened by impregnating the surface in synthetic resin (paraloid B72);
• Using scrapers, cutters, brushes, and needles of varying hardness, the master removes from the surface everything that he considers unnecessary. By securing unstable areas, they do not fall through and can be aligned with the main field of the coin and no cavities remain. All work is performed under a microscope.

These 4 kopecks from 1762 were cleaned by a professional using mechanical cleaning technology. The result is simply magnificent, but such processing of the coin took a very long time (2 months for this coin) and is only relevant for rare and valuable coins.

Source: http://www.wheeclamp.ru/chistqa_monet/chistqa_mednykh_monet

How to clean a bronze coin from dirt and plaque

Bronze, which is an alloy of tin and copper, has rather poor resistance to the oxidizing effects of the environment. In conditions of high humidity and other aggressive environments, the process proceeds even faster, which is why the appearance of the products suffers and significantly deteriorates.

In principle, bronze coins can be cleaned in the same way as other products made from this alloy, but old banknotes require careful handling, since any careless action can lead to the loss of their value.

Let's look at the acceptable and most affordable methods for cleaning bronze coins.

Does it need to be cleaned?

The question of whether a product needs cleaning is not an idle one. Oxidation of a metal surface is a natural process that indicates its age.

But the oxide film, generally referred to as patina, can vary depending not only on the characteristics of the pure metal or alloy, but also largely on storage conditions.

In numismatics, there is the concept of noble or cabinet patina, which gives a coin the charm of antiquity, indicates its authenticity and adds to its value.

There is hardly any need to take such a money disk and clean it. Of course, we are talking more about silver or at least copper coins, but to a certain extent this also applies to bronze. If money was stored in an aggressive environment, oxidative plaque no longer just covers the surface of the metal with a thin layer, but eats inside and becomes part of it, simultaneously destroying it, making it fragile and eating away precious reliefs of the past.

At the initial stage, it is quite possible to stop this process. But, if corrosion has affected the deep layers of the coin, cleaning will have negative consequences and can completely devalue the antique. In any case, no matter what method of cleaning bronze coins is chosen, it should be remembered that no physical effort is allowed.

What should you have on hand?

To clean a bronze coin, you must prepare, in addition to the recommended cleaning compositions, the following protective and auxiliary agents:

• Thin latex gloves for working with acidic and other aggressive compounds.
• Paper napkins, which are better to tear in advance.
• Clean and soft woolen fabric without coarse fibers (small piece).
• Cotton rags.
• Glass containers for work.

Lemon acid

The method is the most famous and widespread. Citric acid can be purchased in a ready-made liquid solution or in crystals, or you can use freshly squeezed lemon juice (in this case it no longer needs to be diluted). The solution should be approximately 70%. How to achieve the desired concentration depends on the starting ingredients, but in any case, it is not necessary to achieve perfect accuracy.

A bronze coin, well washed in running water to remove dirt, is immersed in acid for approximately a quarter of an hour, after which you need to visually evaluate the result. You may need to keep the disc in the solution a little longer.

The change in color of the metal is natural; if everything is done correctly, then after some time it should recover. But the exposed defects, if there were any, will be difficult to hide.

If the effect obtained is insignificant, do not overdo it if the effect of the acid is still evident. This way you can partially or even completely lose the drawing.

To start, you can try simply rubbing the coin disc with half a lemon, then rinsing and wiping clean.

With added baking soda

How to clean more dirty bronze coins? The same acid, but with the addition of baking soda and without water. A small amount of citric acid is added to 50 g of product, achieving the consistency of a homogeneous slurry.

Very carefully and without pressing, rub the resulting pulp into the surface of the disk (don't forget to wear gloves!) and try to achieve a high-quality result using careful circular movements. After this, the coin should just lie on a napkin for about 20 minutes for better impact.

Then it is washed in warm water and again very carefully wiped dry with a rag or soft woolen cloth.

Using an eraser

It is acceptable to use in the case of coins that are heavily damaged by scale and are not very valuable. After treatment with citric acid, the metal is carefully wiped with an eraser to remove black spots. But it should be taken into account that the place of black scale may be replaced by a not very beautiful reddish tint, which will ruin the whole look. In untreated cases, this will go away over time.

How to clean bronze coins with oil?

The method of cleansing using boiled oil is a gentle method and is quite applicable for rare ancient coins. At least the pattern of the money disk will not suffer from such cleaning.

Vaseline or high-quality olive oil are most suitable, but others can be used. The oil should be heated to the boiling point, then put a coin in it and hold for about 5-7 minutes.

Immediately after this, it should be washed in hot water (to wash off the main oil film), and then immersed in ethyl alcohol.

The design will not be affected, but the color of the coin may change. Using this cleaning method, you need to accurately determine the desired result. If you want to get a clean and shiny coin, then after the procedure it is enough to rub it with a clean rag or flannel. If you want to get that very noble cabinet patina, you need time.

Carefully! Boiling oil is much hotter than boiling water. Use tweezers and take precautions!

Cleaning with Soap

This is the most uncomplicated and simple, but, alas, not the most effective and far from the fastest method. However, in some cases it is sufficient. A piece of the simplest laundry soap should be grated and mixed with a small amount of warm water.

The coins are immersed in the solution for at least 2 weeks. It is important that the soap dissolves completely and the solution becomes homogeneous. You can take out the coins from time to time and check them for quality of cleaning.

You can help the process a little by cleaning off minor dirt with a soft cloth.

https://www.youtube.com/watch?v=vFd11vGCAtk

For coins that already have a greenish coating on them, the soap cleaning method is not suitable.

Use of GMFN

This is an abbreviation for hexametaphosphate, and the cleaning method is similar to using soap, but the process is much faster. You can purchase it in online stores that sell all kinds of chemicals. For 50 g of hot water, dilute 1/4 tsp. this salt.

Heavily contaminated specimens are immersed in the solution for a week, less damaged by time and conditions - for several hours. However, within a day, or even earlier, it becomes clear whether this soaking will be of any use or not.

The advantage of HMFN is that while successfully dissolving the surface layers of patina, it does not give a red tint.

With iodine

It is worth cleaning bronze coins with iodine only if you have a certain skill in dealing with valuable rarities. Iodine is dripped onto the coin disk, and then the back of the match is very carefully moved, removing the coating, preventing scratches.

Salt, vinegar and flour

The method seems barbaric, but sometimes it solves the problem well. Flour and salt are mixed by eye in equal parts, after which a small amount of vinegar is added to the mixture until a homogeneous thick paste is obtained.

Very carefully rub this paste into the metal and clean the surface with a soft cloth. The salt must dissolve completely, otherwise scratches cannot be avoided. The coin should lie for another half hour, smeared with the mixture, after which it is washed off and wiped dry.

It is possible to repeat the procedure to achieve a better result.

Acetone

Wearing gloves, take a swab, which is moistened in acetone and wipe the darkened areas of the bronze coin with it. After this, all that remains is to rinse it under running warm water.

Oxalic acid

The meaning and algorithm of actions is the same as with citric acid. The required concentration is 200 ml (a regular glass) of oxalic acid per bucket of water. This amount of solution, of course, will be in excess, but you can calculate the percentage for the required volume. Allows you to clean quite serious stains.

Chicory

You can clean bronze coins using regular dry chicory, which is sold at any grocery store. Dry chicory is diluted with a small amount of water to a thick paste, which, as in other cases, is rubbed onto coins, and then left to lie for a while. After the composition is washed off, wipe the coin disc dry with a dry and clean cloth.

"Pea soup"

A rather exotic, but effective method that allows you to effectively clean bronze and brass. The coins are placed in a pan with peas filled with water and put on fire. When the peas are cooked to a porridge state, the coin is taken out and cleaned under water from the remaining mass, and then wiped dry.

In addition, you can clean bronze coins using chalk powder, wheat flour, soft sawdust and other available products. But everyone does this at their own peril and risk.

By and large, bronze that has lost its appearance can be cleaned with both Pemolux and GOI paste, but the result must correspond to expectations and to the coin that ended up in our hands.

And you should always remember that numismatists are not very fond of cleaned coins, significantly underestimating their collection value, especially in cases where they have changed color or as a result of cleaning additional defects have been exposed.

Source: https://yacollectioner.ru/chistka-bronzovyh-monet/

We clean coins at home: soap, Coca-Cola, citric acid, electrolysis method - Women of the World

Cleaning coins with citric acid is carried out if there are various contaminants on the surface of the product that could not be removed in a soap solution. Coins made of copper and silver are subjected to this treatment. They are easy to clean; oxides and serious contaminants can be removed from their surface.

How to clean silver with citric acid

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Over time, any jewelry, cutlery or souvenirs made of silver darken and lose their shine due to environmental influences. You can easily restore the shine and luxury of precious items at home.

Cleaning silver with citric acid is an economical and affordable method, and most importantly, safe and effective.

How exactly the product can help clean silver

The substance effectively removes contaminants of various natures, therefore it copes well with plaque and darkening of silver objects.

Acids penetrate deep into the top layer of dirt formed when using things and dissolve particles that are easily separated from the surface.

Another property of the substance is bleaching, so the product is suitable for light metal. The effect of the powder increases when heated, and when the liquid boils, the maximum effect is achieved.

Can it harm

Citric acid is an aggressive substance, which is why it effectively removes dirt, stains and plaque. The product corrodes the top unwanted layer and restores shine.

If you make the mixture too concentrated, you can damage the structure of the product.

Even if the consequences are not visible at first, they will appear later: the silver becomes soft and brittle and may break.

Decorative elements are erased, some details disappear.

When cleaning, consider the sample and quality of the item. Low-grade jewelry does not need soaking; you just need to blot it or wipe the surface with a cotton pad soaked in the solution.

An effective gentle method is cleaning silver with lemon.

In what form to use

The product is used as a cleaning agent for silver items.

To do this, take a dry oxidizing agent, which is sold in packages as a food additive. It is a white powder that should be diluted with water.

There is an option to use lemon, where the acid concentration is lower, so it is a gentler method for jewelry with inserts.

How to properly dilute the solution

Experts recommend various compositions that are used to clean silver items with varying degrees of blackening.

Preparation of standard solution:

1. Pour 0.5 liters of water into the container.
2. We dilute 100 g of dry powder.
3. Take foil, wrap the decorations and place them in a bowl.
4. Boil the product for up to 15 minutes.
5. Afterwards we wash and dry.

Cleaning Rules

Correct implementation of the procedure guarantees a high result. Following the advice of experts, you can clean silver without the help of special chemicals, but with simple citric acid .

Stages:

1. Inspection . Before choosing a cleaning method, you should study the scope of work. Carefully inspect the products intended for the procedure. Assess the degree of contamination (darkening, plaque, blackening or stains), which determines the complexity of the required procedure.

1. Preparatory stage . Prepare a container for the procedure. It can be made of ceramics or glass, but in no case metal, as the substance promotes oxidation. Next, select the method and necessary equipment for cleaning.

1. Follow the instructions . Once you select a specific method, strictly follow the instructions. Do not leave products in the solution longer than prescribed. If the item comes with care instructions, be sure to follow them, otherwise you may damage the surface.

1. Carrying out . Watch the process. Each metal reacts to lemon differently, depending on its composition. If you control the cleansing, it is possible to stop unwanted reactions and preserve the jewelry.

How to clean blackness

If there are dark areas on the product, then it is necessary to strengthen the effect of the product.

For the procedure you will need:

• 50 g of substance;
• 500 ml water;
• piece of copper.

Step-by-step instructions for cleaning blackness:

1. Take a glass container (not iron, it’s important) and dilute the powder in water.
2. Put the wire there too.
3. Place the dishes in a water bath.
4. When the liquid is hot, place the silver items there for 30 minutes.
5. Remove jewelry from container and rinse.
6. Wipe the surface with a sponge or piece of cloth.
7. Lay things out to dry.

If the blackness has not completely disappeared, the procedure should be repeated again.

Tip: hard-to-reach places should be wiped with an eraser: this way you can remove softened dirt and stains.

How not to cause harm

Silver coins should be cleaned especially carefully to preserve the patina that indicates authenticity. This is a natural thin coating on the metal.

In order to refresh the appearance of coins, you should use the following method:

1. Take 200 ml of water, add 1 tbsp. dry powder.
2. Place a coin in the solution.
3. Check every 2-3 minutes to see how light the surface is. The maximum procedure time is 15 minutes.

Efficacy of the substance

Citric acid can refresh and restore the former shine to darkened silver items.

But the productivity of actions depends on the degree of contamination and the quality of the metal:

1. Black silver jewelry can be easily cleaned, but requires the use of copper wire and a more concentrated solution.
2. Gold-plated metal requires delicate handling. You can use pure lemon or a weak concentrate. The procedure is carried out under strict supervision.
3. Matte silver cannot be treated with lemon powder; only special products must be used.

Can acid be replaced with lemon juice?

If acid is not at hand, then silver can be cleaned with natural juice.

There are several methods that are used depending on the degree of darkening.

For lightly contaminated sterling silver:

• squeeze citrus juice;
• add water in a 1:1 ratio to the juice;
• put the earrings or chain in a container for half an hour;
• rinse with clean water.

A quick way to clean small jewelry:

• cut the lemon into two halves;
• take a silver ring and press the decoration completely into the pulp;
• leave in lemon for 1 hour;
• Remove the item and rinse with clean water.

Conclusion

To preserve the beauty of silver items, you must follow simple care rules, including: wiping with a dry cloth after contact with skin, avoiding getting wet, storing in a dry room.

If things have darkened, they can be easily cleaned with citric acid using proven effective recipes.

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Source: https://jawoman.ru/dom-i-uyut/uhod-za-ukrashenijami/cistka-serebra-limonnoj-kislotoj.html

Cleaning coins from different metals at home: chemicals and folk remedies

Cleaning coins at home can be done in various ways. Special chemical preparations and compositions prepared according to folk recipes are suitable. Electrochemical surface cleaning gives a quick effect. To choose the right product, you need to consider the material from which the coins are made. During work, you must take precautions.

Features of cleaning coins

Coins develop a dirty coating due to oxidation processes. Money that has been lying in the ground for a long time becomes especially dirty. To remove dirt and not damage the metal, you need to carry out the cleaning work carefully. The main thing is to take into account the material used to make the specimens.

Copper

If there are no traces of rust on copper products, then it is better to simply wash them with warm water with the addition of crushed laundry soap. Corroded items can be easily cleaned with solutions containing citric acid or vinegar. The coins are left in the liquid composition with these components for 2-3 hours.

Copper collectible money cannot be cleaned with abrasive compounds, high vinegar concentrate or ferric chloride solution. Do not expose metal items to high temperatures.

Bronze

Bronze is most susceptible to oxidation and contamination over time. Products can be successfully cleaned using citric acid, oil or soap solution.

Bimetal coins

Bimetallic specimens are made from two different materials. Silver or steel is most often used for the central part; gold or copper can be used at the edges.

Money made from bimetal and aluminum bronze is cleaned with solutions based on ammonia, vinegar, soda or citric acid. It is permissible to make a concentrate based on liquid dishwashing detergents, as well as using a drink such as Coca-Cola.

Silver

When choosing a silverware cleaner, it is important to consider the grade. Low purity money is cleaned with soapy water or olive oil.

Products with a high standard are allowed to be dipped in a solution with ammonia or soda. The components must be diluted with water. Contaminated areas are additionally rubbed with a soft brush. Also for cleaning use a mixture of toothpaste, ammonia and soda. The composition is applied to coins and wiped with a brush.

Golden

Antique gold items should not be cleaned of dirty deposits with products containing aggressive components. You should also avoid strong friction on the surface of gold coins, even with a regular cloth. Small scratches immediately remain on the metal.

If dirt appears on the money, use a soap solution. After the procedure, the money is washed with clean water and dried, spread on a towel. It is allowed to use dishwashing detergents and washing powder. Soaking in a solution with laundry soap helps effectively.

USSR coins

Coins from the USSR period had different issue dates, so the products also differed in material:

• The first money of the USSR period appeared in 1924. Coins of different denominations were made of silver (500 and 900 standard) and copper.
• New coins began to be minted in 1926. The short period of time is due to the fact that money made from silver and copper turned out to be too heavy. Therefore, aluminum bronze was used to make new coins.
• In 1932, new nickel money was added to circulation. This material is durable.
• Significant changes in the material of manufacture were noticeable in 1961. Money was minted from a copper-zinc alloy and a copper-nickel alloy.
• The last issue of money during the USSR period was in 1991. Coins were made from steel and plated brass, as well as an alloy of copper and nickel. At the same time, bimetallic coins began to be issued: the center was made of an alloy of copper and zinc, the edges were made of an alloy of copper and nickel.

Having at hand information about the material of the issue of coins of a particular year during the USSR period, it will be possible to choose a suitable means for removing old dirty plaque and rust.

Copper-nickel

Copper-nickel money is well preserved in the ground and in other aggressive environments, so it is easy to clean. The hardest thing to clean is the appearance of red-brown deposits resulting from oxidation.

Effectively clean using electrolysis. Cleaning in a vinegar solution is acceptable. Hydrochloric acid cleans money from an alloy of copper and nickel well. The component is contained in the “Toilet Duckling” plumbing cleaner.

Brass

Brass is an alloy of zinc and copper. Coins made from this material are subject to corrosion, oxidation and an uneven patina. Brass money is cleaned with soap solutions, citric or oxalic acid, vinegar, and Coca-Cola.

Specialized chemicals for cleaning coins

At home, you can clean coins until they shine using industrial chemicals:

• Effective metal cleaner Leuchttrum. It is enough to soak the coins in this mixture for 15 minutes, then rinse with clean water.
• Trilon-B is capable of dissolving dirty deposits and patina. To prepare the solution, the concentrate must be diluted with water.
• Heavy contamination can be removed with plumbing cleaners containing hydrochloric acid. The money is dipped into the solution for 12 minutes.
• The universal product “Asidol” is suitable for cleaning coins made of any material. Apply the product to the dirty surface with a rag and leave for 1 minute. Then wipe the coin with a clean cloth.

Other effective industrial products for cleaning collectibles include: Shine-Coin, Silbo.

Electrochemical cleaning

Electrolysis is considered a quick and effective option for cleaning money from dirt. To work, you will need to prepare a power supply (a universal charger or a charger from an old mobile phone is suitable):

• The power supply plug is cut off and the wires are divided into two parts.
• The ends of the wires are cleared of insulation.
• Small metal clips are attached to the ends of the wires (paper clips work well).
• Then prepare a plastic container into which a saline or soda solution is poured.
• A clip with a “-” sign is attached to a coin, and a clip with a “+” sign is attached to a metal object.
• The clamps are held by the isolated areas, preventing them from touching, and lowered into the solution.
• The power supply is plugged into the outlet.

After the procedure is completed, the power supply is removed from the outlet, and the specimens are cleaned with a soft brush and soapy water.

Folk remedies

The compositions made according to folk recipes contain inexpensive and effective components that can be found in every home.

Mix of soda and soap

You can clean coins with a mixture of baking soda and soap. The method works quickly:

• Soap shavings are dissolved in warm water.
• Dissolve soda in a separate container with water.
• Combine two ready-made compositions.
• The products are dipped into the resulting liquid and left for 12 minutes.
• After soaking, all specimens are thoroughly washed in clean water and dried thoroughly.

After cleaning, it is recommended to wipe the money with alcohol and lubricate it with ointment and Vaseline. These components will protect the surface from the reappearance of contamination.

Method with oil

The option with oil is suitable for cleaning money:

• For work, it is better to choose Vaseline or olive oil, which is heated over a fire.
• The collection is dipped into the solution and boiled until the dirt is completely dissolved.
• Then the products are washed with a brush and soap.
• Remaining oil is removed by boiling in clean water.

The procedure allows you to restore radiance and shine to the surface. At the end of the procedure, it is recommended to wipe the products with ethyl alcohol.

Coca Cola

The carbonated drink Coca-Cola contains aggressive components that can corrode dirt and rust:

• The drink is poured into a container.
• Collectible items are immersed in soda.
• All specimens are left for 10-12 hours.
• Wash off the layer of loose dirt in clean water and wipe the surface dry.

Dentifrice

You can clean coins with white toothpaste with a uniform structure without any impurities or abrasive particles. The sequence of actions will be as follows:

• a soft toothbrush is moistened in water;
• squeeze a small amount of paste onto the brush;
• with smooth circular movements, without pressure, clean the metal surface;
• then the composition is washed off from the coins and wiped dry.

Vinegar and salt

Vinegar is able to cope with oxides on the surface of products. When adding salt to a solution, the cleaning effect is enhanced:

• Add salt (20 g) to vinegar (55 ml).
• Stir lightly.
• The salt will not dissolve completely and will settle to the bottom.
• Money is placed on layers upon layers.
• Soaking time 20 minutes.
• Every 2 minutes the coins need to be turned over.

Precautionary measures

Work using various means for cleaning coins must be carried out correctly:

• before starting work, you need to put on household gloves;
• tweezers should be used to hold money in the prepared solution;
• The finished product is first tried on one sample, only after that they proceed to cleaning all the coins;
• after the dirt has softened, it is cleaned off with a soft sponge;
• Do not use products containing abrasive components;
• Do not use tap water if it contains a lot of chlorine.

Whatever composition is chosen for cleaning coins from dirt, you must follow the rules and recommendations. In this case, there will be no damage to the products and no harm to health.

Source: https://hozzi.ru/chistka/monet-v-domashnih-usloviyah