Assay (acidimetric,NaOH): 99 - 100 %

Assay (total alkalinity calc. as NaOH): 99 - 100 %

Identity: passes test

Appearance of solution: passes test

Carbonate (as Na₂CO₃): ≤ 0.5 %

Chloride (Cl): ≤ 0.0005 %

Phosphate (PO₄): ≤ 0.0005 %

Silicate (SiO₂): ≤ 0.001 %

Sulfate (SO₄): ≤ 0.0005 %

Total nitrogen (N): ≤ 0.0003 %

Heavy metals (as Ag): ≤ 0.0005 %

Heavy metals (as Pb): ≤ 0.0005 %

Al (Aluminium): ≤ 0.0005 %

As (Arsenic): ≤ 0.0001 %

Ca (Calcium): ≤ 0.0005 %

Cu (Copper): ≤ 0.0002 %

Fe (Iron): ≤ 0.0005 %

Hg (Mercury): ≤ 0.00001 %

K (Potassium): ≤ 0.020 %

Mg (Magnesium): ≤ 0.0005 %

Ni (Nickel): ≤ 0.0005 %

Pb (Lead): ≤ 0.0005 %

Zn (Zinc): ≤ 0.001 %