Specification:

Appearance: White or light yellow crystal

Purity: 99% min

Potassium (K2O): 51% min

Free acid: 0.03% max

Calcium: 0.01% max

Chloride and chlorate (Cl): 5ppm max

Iron (Fe): 2 ppm max

Arsenic (As): 1ppm max

Heavy metals (Pb): 5 ppm max

Water insoluble: 0.005% max

pH value (5% water solution): 5.0-8.0

Application

It can be used as basic fertilizer, additional fertilizer and seed manure. It is suitable especially for onions, garlic, hemp, potatoes and other crops which need high sulfur but avoid chlorine. For soil lack of sulfur, ammonium sulphate is favorite fertilizer.

For specific application rates follow the recommendation of a qualified individual or institution.