Assay (as HPO3)......................................................................33,5-36,5 %

MAX. IMPURITIES

Reducing substances by KMnO4 (as H3PO3).................................. 0,01 %

Stabilizer (NaPO3)...................................................................57,0-63,0 %

Chloride (Cl).................................................................................. 0,001 %

Nitrate (NO3).................................................................................. 0,001 %

Sulphate (SO4).............................................................................. 0,005 %

Heavy metals (as Pb).................................................................... 0,005 %

As............................................................................................... 0,0001 %

Cd................................................................................................. 0,001 %

Co............................................................................................... 0,0005 %

Cu................................................................................................. 0,001 %

Fe.................................................................................................. 0,005 %

Mn.............................................................................................. 0,0005 %

Ni.................................................................................................. 0,001 %

Pb................................................................................................. 0,001 %

Zn................................................................................................. 0,001 %