ITEM

STANDARD

STANDARD

CONTENT%

≥90.0

≥85.0

Chloride(Cl-)%

≤0.003

≤0.005

Sulphate (SO₄²-)%

≤0.001

≤0.002

Iron(Fe³⁺)）%

≤0.0001

≤0.0005

Residue %

≤0.006

≤0.020