ITEM TESTED               STANDARD                        RESULT

Purity(Na2S2O5)             96.5% min                             97%

Iron(Fe)                           0.005% min                          <0.003%

Aresentic(As)                  1 ppm  max                           <1 ppm

Water insoluble               0.05% max                              0.01%

PH value                           4.0-4.6                                    4.4

packing & Delivery

Product packaging

We have cooperated with experienced shipping forwarders for many years, they arrange the shipment. No matter by express, by air or by sea, we will track the course of the goods all the way, to make sure goods arrive at you on time and in good condition.

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