How Many Campden Tablets per Gallon?

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A Campden tablet is a tablet that is used to add sulfite and potassium metabisulfite to wine or beer. It helps kill bacteria and inhibit the growth of wild yeast. It also helps stabilize wines and beers that are being bottle conditioned. So, how many Campden tablets per gallon?

How Many Campden Tablets per Gallon?

Generally, you will want to use one Campden tablet per gallon (3.8 L) of wine or beer. This is the standard dose that is recommended. However, you may want to use it more or less, depending on the particular situation and the recipe.

If you are fermenting wine or beer with wild yeast, it is recommended that you add one Campden tablet per gallon (3.8 liters) immediately after crushing the grapes or brewing the beer. This will help prevent the wild yeast from taking over and ruining your batch.

Sanitizing your fermentation vessel is also essential. No one wants to drink bacteria-ridden wine or beer! To sanitize your vessel, crush 16 Campden tablets and add them to 5 gallons (19 L) of water. This will make a sanitizing solution that you can use to clean your vessel.

A person brewing beer

How Campden Tablets Work

The Campden tablets are made of potassium metabisulfite. When they are added to any solution, they release sulfur dioxide gas. This gas is what sanitizes the solution, kills bacteria, and prevents wild yeast from growing.

The gas also stabilizes raw fruit juices and wine that are being bottle-conditioned. The gas will help prevent oxidation, which can cause the wine to spoil or develop off-flavors. It is important to note that this gas does not preserve wine forever, and it will eventually dissipate with time.

When adding Campden tablets to wine or beer, it is important to remember that they will lower the pH of the solution. You should add the tablets well in advance of adding the wine or beer to your fermentation vessel. This will prevent your solution from becoming too acidic.

What Are the Uses of Campden Tablets?

Campden tablets have various uses in the winemaking and brewing process that you should be aware of. Here are some of the most important ones:

Remove Chlorine and Chloramine From Brewing Water

Chlorine is of the causes of off-flavors in beer. Chloramine is an even more potent version of chlorine and can cause your beer to taste very bad or even be undrinkable. Chlorine contributes to chlorophenols, which can make your beer taste like plastic and cause headaches.

To remove chlorine and chloramine from brewing water, you should add half a crushed Campden tablet per 5 gallons of water. This will break down the chlorine into harmless chloride ions that are safe for drinking.

Sanitize Your Brewing Equipment

Sanitizing your brewing equipment is an essential step in the brewing process. Using Campden tablets is one of the easiest and most effective ways to do it. To sanitize your equipment, you should add 16 crushed Campden tablets to 5 gallons (19 L) of water.

Pour the solution into the vessel that you want to sanitize and let it sit for at least 30 minutes. This will give the sulfur dioxide gas time to do its job. Once the time is up, you can rinse out the solution with clean water and let the equipment dry.

Stabilize Fruit Juice and Wine That Is Being Bottle-Conditioned

Bottle-conditioning is a technique that involves adding more yeast to the bottle before it is sealed. This allows the wine or beer to continue fermenting in the bottle, which carbonates it naturally.

However, this process can also lead to oxidation if not done properly. To prevent this, you should stabilize the wine or fruit juice by adding a crushed Campden tablet per gallon before bottling. This will help preserve it and prevent it from spoiling.

In addition to these uses, Campden tablets can also be used to sanitize fruit that you are planning on juicing or using in wine. This way, you will not have to worry about bacteria or wild yeast ruining your batch.

An image of a person brewing beer
Home distillation equipment for the distillation of alcohol

Frequently Asked Questions

How Many Campden Tablets Do I Need for 5 Gallons?

You only need half a crushed Campden tablet per 5 gallons (19 L) of water to sanitize your brewing equipment. This will help remove chlorine and chloramine from the water, which can cause off-flavors in your beer.

How Many Campden Tablets Does It Take To Sanitize a Gallon of Water?

You need 16 crushed Campden tablets to sanitize a gallon of water. This solution should be left to sit for at least 30 minutes before using it. This ensures that the sulfur dioxide gas has time to work and sanitize your equipment.


Having the correct amount of Campden Tablets per gallon is important for your homebrew. Too few, and you can end up with off-flavors in your finished beer. Too many, and you can end up with a very bitter and astringent beer that isn’t enjoyable. Balance it and enjoy your homebrew!