Appearance Fine Powder Colour Black Powder Size 80 Mesh Chemical Properties Solubility (dry basis) 100 % . Humic Acid (dry basis) 80 % Min. Fulvic Acid (dry basis) 15 % Min. Moisture 15 % W/W Max. pH of 2% Solution 8.5-10 Nitrogen 0.3-1.5 % w/w Potassium as K2O (dry basis) 10-15 % w/w Max Pb (ppm) 20 ppm Max. Hg (ppm) 0.2 ppm Max. Cd (ppm) 01 ppm Max.
