We're scaling up production and I'm in the process of reviewing cleaning procedures in our brewery. So far we have been using a PBW like cleaner (sodium percarbonate and sodium metasilicate) in hot solution for primary cleaning of soil and debris but most info about CIP mentions use of caustic sodium hydroxide solutions before rinse and acid wash and sanitizing. Is there a reason to prefer hydroxide to percarbonate? On the surface, it looks that their cleaning principles are different, since NaOH acts by being an alkali while percarbonate is an oxidant.
Apart from the reaction with carbon dioxide from carbonation, I'm worried about corrosion issues. How much contact time for a given temperature is safe for stainless steel?
Apart from the reaction with carbon dioxide from carbonation, I'm worried about corrosion issues. How much contact time for a given temperature is safe for stainless steel?
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