• sodium Bisulfite food grade is primarily used for food industry as a preservative in fruits and starch and as an enzyme inhibitor in melanin formation (black and brown spots). It is used to preserve color and inhibit bacterial growth on fruits, vegetables, some seafood and wine.

• sodium Bisulfite industrial grade is primarily used for water treatment to remove excess chlorine in drinking water. It is used to bleach pulp in the pulp and paper industries. Mainly it is used to remove metals from industrial waste water.
• Sodium Bisulfite serves as dual purpose in photographic industry. It is responsible for preserving the thiosulfite in the fixing baths and scavenging the dissolved oxygen in the developer solution.