Minimum assay.............................................................................. 99,0 %

pH of 5% solution.......................................................................... 5,5-8,0

MAX. IMPURITIES

Insoluble matter in H2O................................................................. 0,003 %

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

Phosphate (PO4)......................................................................... 0,0005 %

Nitrite (NO2)................................................................................... 0,001 %

Sulphate (SO4).............................................................................. 0,002 %

Iodate (IO3).................................................................................. 0,0005 %

Ammonium (NH4).......................................................................... 0,001 %

Heavy metals (as Pb).................................................................. 0,0005 %

As............................................................................................. 0,00004 %

Ca................................................................................................. 0,005 %

Cd............................................................................................... 0,0002 %

Co............................................................................................... 0,0002 %

Cu............................................................................................... 0,0002 %

Fe................................................................................................ 0,0002 %

K................................................................................................... 0,005 %

Mg................................................................................................ 0,001 %

Mn.............................................................................................. 0,0002 %

Ni................................................................................................ 0,0005 %

Pb............................................................................................... 0,0005 %

Zn............................................................................................... 0,0005 %