How to clean stainless steel brewing equipment?

 How to clean stainless steel brewing equipment?

Stainless steel is the best material for making brewing equipment. Because stainless steel is corrosion-resistant, easy to weld, reasonably priced, and malleable. Because of its unique properties, stainless steel has become the material of choice for knowledgeable winemakers. Micet Craft will trigger from the composition and characteristics of stainless steel to discuss cleaning and disinfection methods. We hope to provide tips for anyone who manufactures and repairs stainless steel equipment.

Is your brewing equipment rusty? Do you know how to properly clean stainless steel and other beer equipment? It is very difficult to keep the equipment clean, especially if you do not use stainless steel brewing equipment. Compared with other metal materials, stainless steel is easier to clean and very hygienic. Upgrading your brewing equipment to stainless steel can reduce maintenance requirements and get advanced fermentation technology. Fermentation tanks made of stainless steel are more conducive to heat dissipation. For many brewers who use second-hand equipment or rust-prone brewing equipment, the production time can be longer.

Some people's stainless steel equipment began to rust, this is due to the surface protective chromium oxide problems. Scrubbing stainless steel cans with bleach will cause the protective coating to decompose, exposing the iron in the stainless steel to the air and forming rust.

The stainless steel brewing equipment and stainless steel fermentation tanks manufactured by

Passivated steel

What should you do if your brewing equipment starts to rust? Since the protective coating is removed and the iron is exposed, the only way to repair it is to fix the stainless steel by passivating it. In the passivation process, the stainless steel needs to be immersed in nitric acid, which helps to dissolve free iron and other contaminants on the metal surface. This process will allow the stainless steel to re-oxidized the chromium and provide a protective coating. The process of passivating steel usually takes up to 30 minutes. Many people choose to use nitric acid to clean stainless steel because it is a stronger protective layer.

Clean stainless steel brewing equipment

If you can't use nitric acid to passivate stainless steel, what should you do? Cleaning the stainless steel will directly contact the bare metal. To clean stainless steel properly, you need to use an oxalic acid cleaner, don't use steel wool, it will peel off the stainless steel metal. The best way to clean stainless steel is to use oxalic acid cleaners and non-metallic green or white scrubbing pads for scrubbing. Use a towel to scrub and dry the stainless steel. Keep it clean and dry. Oxygen will automatically passivate and re-form the chromium oxide coating.

Because stainless steel is passivated again every time it is cleaned. So, upgrading the brewing equipment to stainless steel is a good way to prevent rust and ensure the pure flavor of the beer. The most common material for brewing equipment is 304/316 stainless steel. Appropriate stainless steel has good corrosion resistance and is very easy to weld. Try not to use brewery equipment made of 303 stainless steel because it is difficult to weld and prone to cleaning problems.

Stainless steel brewing equipment is a nickel alloy, so as long as it is cleaned correctly, it will not rust. In some cases, you can identify rust by reddish-brown or pink. When you find rust earlier, use simple polishing to remove the rust. Deeper corrosion marks may appear in the fermenter, which can be challenging to handle.

Why not use bleach to clean stainless steel brewing equipment?

Although bleach is usually the cleaning method of choice for many people, bleach can be one of the worst disinfectants for the brewing industry that uses stainless steel. The bleaching agent is suitable for cleaning plastic or glass fermentation tanks. As just said, the bleach will peel off the stainless steel, and the heated bleach will deposit on the surface of the stainless steel container. Bleaching agents not only damage stainless steel but also cause calcium deposits on stainless steel.

Beer stone

One of the biggest problems faced by beer brewers is how to remove beer stones from aging tanks or barrels. Because the beer stone will slowly accumulate over time, it is difficult to remove it when you can find it. Beer stone is a kind of calcium oxalate dirt, it will appear together with hard water minerals and protein. If the beer stone is not removed, it will change the taste of the beer or shorten the shelf life. If you don't clean the beer stone properly, it will cause the equipment surface to be unhygienic and even ruin the entire batch of beer.

How to clean the beer stone on the surface of the equipment?

If you want to clean the beer stone, please add a corrosive solution to the hot water first. It will neutralize the beer stone and remove the beer stone from stainless steel, glass, or plastic. Then, use phosphoric acid to disinfect the equipment after the lye is cleaned. This is to remove microorganisms from the equipment. Remember, you must make sure to remove all the beer stones, because microorganisms may hide in the gaps in the equipment.

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