Powder Water-solubility (dry basis) 80% Min 95% Min 75% Min 95% Min 95% Min Content of Humic Acid (dry basis) 45-55% 55% Min 60% Min 65% Min 68% ...ssss
Appearance Blackish brown powder Insoluble matter in water 2.5% Max Moisture 8.5% Max Total Ca and Mg as CaSO4 3.0% Max Total Cr 3.5-5.0% pH 3.5...ssss