Caustic Soda Flakes – 1kg container

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1.     Pour 2l of cold water and pour it into a pyrex or stainless steel pot, do not use normal glass as this will shatter seeing as when the caustic soda reacts with water it gets boiling hot.

2.     Next add 500g of Caustic Soda crystals, obtainable from supermarkets or hardware stores, to the cold water. Wait for the solution to cool down and pour it back into a normal glass bottle.


This solution is approximately 30% sodium hydroxide and can be used to clean fermentation equipment, beer kegs, beer lines etc.


Use gloves and protective eyewear when using it and avoid splashing it on your skin. Please take care when handling Caustic Soda, never pour water directly onto the Caustic Soda crystals.  If you should get some of it on your skin wash it off immediately.  You will know it’s off when your hands don’t feel soapy anymore.  As with any chemical, use it in a well-ventilated area.

Caustic Soda Flakes – 1kg

Cleaning Uses

·       Fermenter: Dilute 4ml of the solution per litre of water, warm water is better, and let it stand overnight.

·       General Cleaning (excl Aluminum): 4-10ml of the solution per litre of water, warm water is better, and let it stand overnight.

·       Kegs: Pour 100ml of the solution into the keg and fill the keg with water, leave it overnight and then rinse 3-4 times with water before use. Alternatively, you can just pour 30ml into the empty keg and top it off with 2l of boiling water, turning the keg in a different position every half hour to ensure the mixture gets into all the crevices of the keg. You can leave the mixture in the keg until you are ready to use it, just rinse with boiling water before making use of the keg.

·       Beer Lines: It’s recommended that you clean your beer lines every three weeks, this usually goes hand in hand with cleaning your kegs.  When you’re done cleaning your kegs leave the solution in the keg, apply some pressure to the keg and simply push some of the caustic soda mixtures through your beer lines.  Leave it for 20 minutes and then flush with beer through the tap and lines.

Cleaning tips video.

Additional information

Weight1.2 kg

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