1.Industrial grade sodium metabisulphite

Purity(Calculated with Na2S2O5)	≥95%
	(SO2≥65%)
Iron(Fe)	≤0.005%
Water insoluble matter	≤0.05%
PH value:	4.0-4.6

Uses: Mainly used for producing medicine iodoform, Sola sulfone, vanillin Photogra0phical fixative, rubber solidfying agent, dechloride agent of bleached fiber, leather treatment of leathermaking industry, etc.

Packing:25kgs,50kgs per each woven bag with plastic lining or 1000kgs per each package

2.Foodstuff grade sodium metabisulphite

Purity(Calculated with Na2S2O5)	≥95%
Iron(Fe)	≤0.0005%
Water insoluble matter	≤0.05%
Arsenic (As)	≤0.0002%
Heavy metal (Cal.in Pb)	≤0.002%
PH value:	4.0-4.6

Uses:Mainly used for manufacturing sulfurous acid and bactericidal, Carrying out vegetable dehydrate, fruit preservation and bleaching.

Packing:25kgs,50kgs per each woven bag with plastic lining, or 1000kgs per each package