SODIUM METABISULFITE 98%MIN POWDER, ( FOOD.GRADE )   

INSPECTION STANDARD  GB 1893—2008

TESTING ITEM             INDEX   RESULT

Main Content(as NA2S2O5)     98% MIN 

SO2 Content                 65% MIN      

Insoluble in water                0.01% MAX  

Ferrous content:                0.001% MAX  

Heavy metal(Pb) content                0.001%MAX      

Moisture                      0.05% MAX   \