Assay (complexometric): 99.0 - 101.0 %

Identity: conforms

Appearance of solution: passes test

Insoluble matter: ≤ 0.005 %

pH-value (5 %; water): 5.0 - 6.5

Acidity or alkalinity: passes test

Bromide (Br): ≤ 0.05 %

Nitrate (NO₃): ≤ 0.001 %

Phosphate (PO₄): ≤ 5 ppm

Sulfate (SO₄): ≤ 0.002 %

Total nitrogen (N): ≤ 0.0002 %

Heavy metals (ACS): ≤ 5 ppm

Heavy metals (as Pb): ≤ 0.0005 %

Al (Aluminium): ≤ 0.0002 %

As (Arsenic): ≤ 0.0002 %

Ba (Barium): ≤ 0.002 %

Ca (Calcium): ≤ 0.003 %

Cu (Copper): ≤ 0.0005 %

Fe (Iron): ≤ 5 ppm

K (Potassium): ≤ 0.001 %

Mn (Manganese): ≤ 5 ppm

Na (Sodium): ≤ 0.001 %

NH₄ (Ammonium): ≤ 0.002 %

Pb (Lead): ≤ 0.0005 %

Sr (Strontium): ≤ 0.005 %

Water: 51.0 - 55.0 %

Corresponds to ACS, ISO, Reag. Ph Eur