1) Specification 

Appearance: black brown powder

Size: 60-80 mesh 

Water-solubility: 95%-97% 

Humic acid (dry base): 55%-60% 

Potassium content (K2O):  8%-10%

PH:9-11 

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