Spec.:                                                    Agriculture grade

Content                                                      99.0% min,

PH                                                                   5.0-7.0

Heavy metal (as Pb)                             0.001% max

Water insoluble matter                          0.02% max

Sulfates                                                     0.02% max.

Iron                                                             0.01% max.

Chloride                                                  0.005% max.

Packing: In 25 kg net each PP/PE bag