Sodium Metabisulphite


Also known as Sodium Pyrosulfite or Disodium. Used in RO units, at no time should there be a Free Chlorine residual in RO feed water. Even very low levels of chlorine in the feed stream will result in irreparable oxidation damage of the membrane. Therefore operators should ensure that oxidants do not enter the RO system by using a chemical reducing agent such as sodium bisulfite.It is also used as a disinfectant, antioxidant and preservative agent. In winemaking, this basically has two purposes: to kill wild yeast and for use as a sanitizing agent. Use it before to clean bottles, carboys, and to soak corks in a solution before bottling.

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