We use the highest grade of copper sulphate (pentahydrate) available. The product contains 25% elemental copper by volume. We independently check each batch received for heavy metal contaminants before it is put into production. We also periodically check all of our copper products for PCB/Dioxin, a known contamination risk for all copper types.
Daily Dose Rate
Fertilizer use: 3 - 10 kilograms per hectare depending on deficiency and soil exchange capacity.
Animal dosing: 50 - 150 milligrams per dose of elemental copper.