Purity (metallic): ≥ 99.9999 %

Assay (acidimetric): ≥ 99.5 %

Chloride (Cl): ≤ 3 ppm

Nitrate (NO₃): ≤ 10 ppm

Phosphate (PO₄): ≤ 5 ppm

Ag (Silver): ≤ 0.010 ppm

Al (Aluminium): ≤ 0.050 ppm

Ba (Barium): ≤ 0.050 ppm

Be (Beryllium): ≤ 0.010 ppm

Bi (Bismuth): ≤ 0.050 ppm

Ca (Calcium): ≤ 0.100 ppm

Cd (Cadmium): ≤ 0.005 ppm

Co (Cobalt): ≤ 0.005 ppm

Cr (Chromium): ≤ 0.010 ppm

Cu (Copper): ≤ 0.005 ppm

Fe (Iron): ≤ 0.050 ppm

Ga (Gallium): ≤ 0.050 ppm

In (Indium): ≤ 0.050 ppm

K (Potassium): ≤ 0.100 ppm

Li (Lithium): ≤ 0.050 ppm

Mg (Magnesium): ≤ 0.010 ppm

Mn (Manganese): ≤ 0.010 ppm

Na (Sodium): ≤ 0.100 ppm

Ni (Nickel): ≤ 0.010 ppm

Pb (Lead): ≤ 0.005 ppm

Sr (Strontium): ≤ 0.010 ppm

Tl (Thallium): ≤ 0.005 ppm

Zn (Zinc): ≤ 0.010 ppm