Item

Standard

Clarity of solution

Clear

Heavy metals

≤20ppm

Chloride

≤0.011%

Sulphate

≤0.014%

Loss on drying

≤0.2%

Arsenic

≤2ppm

NH₄+

≤200ppm

Readilg carbanigable substaneces

Colorless

Residue on lgnition

≤0.1%

Assay

≥98.5%

Total plate counmt

NMT 1000/g

Mold

NMT 100/g

Coliforms

Negative