Composition

9.60% Min - Magnesium

16.00% Min - Magnesium Oxide

12.50% Min - Sulphur

7ppm - Iron

<1ppm - Arsenic

<1ppm - Cadium

30-80ppm - Chloride

<1ppm - Lead

Composition

21.30% - Zn Content

4.86% - pH of 5% Soln

10% - Sulphur

0.002% - Lead

0.0002% - Cadmium

0.01% - Arsenic

0.02% - Insoluble Matter