... , Humic acid : 50%-55%, Trace element: Ca, Mg, S, Cu, Zn,Mn, Mo Humic Acid 50-55% Granule Soil Conditioner ... granule Diameter : 2-4mm Humic acid (dry base): 50%-55% Organic matter (dry base): 60%-65% NPK: ... 3-5% Trace element: Ca, Mg, S, Cu, Zn, Mn, Mo Humic Acid Granular ... in waterNot soluble in waterOdorodorlessHumic acid (dry basis)50-55%Organic matter (dry basis)60-65%Content ...