Sodium Thiosulfate, 99% Anhydrous, Reagent

 
ResultLimits
Assay:99.7%99% min.
Heavy Metals (as Pb): <0.0001%0.001% max.
Sulfide: <0.0001%0.0001% max.
Calcium: 0.001%0.01% max.
Loss on drying(105°C): 0.2%1.0 % max.
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