PRODUCT SPECIFICATION Items Specifications Unit Purity 99 Min % Water Insoluble 0.01 Max % Na2S 0.001 Max % Iron (Fe) 0.001 Max % Ph Value 6.5-9.5 - PRODUCT APPLICATION 1. used in photographic processing as a photographic fixer 2. electroplate applications in steel, as part of patina recipes for copper alloys 3. used in the tanning of leather 4. in PH testing of bleaching substances 5. in Waste water treatment, neutralizing bleached and chlorinated water. 6. to lower chlorine levels in swimming pools and spas following super chlorination 7. used in bleach 8. used in paper industry 9. used to remove i…