1) Specification 

Appearance: black brown powder 

Size: 80-100 mesh 

Water-solubility: 95%-97% 

Humic acid (dry base): 55%-60% 

Potassium content (K2O):  8%-10%

PH:8-9 

2) Package: 25kg /PP.woven bag or 25kg / paper bag with inner plastic lining