Humate H-19 is a high polymer heterogeneous aromatic hydroxyl carboxylic acid salt. A black crystal with a slightly glossy appearance, it is soluble in water and weak alkalis. It is comprised of such active groups as hydroxyl,carboxylic acid salt and nitrogen.Specification:1) Appearance: granular2) Water solubility: 95% (min.)3) Humic acid: 75% (min.)4) Potassium content (K2O dry basis): 14% (min.)5) Applications:a) Used as drop irrigation, foliar fertilizer and multi-function compound fertilizerafter combination with nitrogen and phosphorusb) Also used as an oil ameliorator, plant growth stimulant and fertilizer efficiencypromoter25kg/paper bag, 50kg/plastic woven bag with PVC liningG.W.: 25.15kg, 50.15kg producing area:China