Quality standard :
Item |
Chinese standard |
Company standard |
|
Top-grade |
First grade |
||
Main content(Na2S2O5) |
≥96.5 |
≥95.0 |
≥97.0 |
Fe %( Fe) |
≤0.005 |
≤0.010 |
≤0.002 |
Water-Insoluble |
≤0.05 |
≤0.05 |
≤0.02 |
Arsenic(As) content |
≤0.0001 |
— |
≤0.0001 |
Net weight: 25, 50, 1000kilograms per bag or following your demands.