| ≥1 piece |
Assay: 99%min.
Chloride: 0.005%max.
Sulfate: 0.01%max.
Phosphate: 0.001%max.
Mg: 0.001%max.
Iron: 0.001%max.
Al: 0.002%max.
Ca: 0.05%max.
Heavy Metals: 0.002%max.
Water Insolubility: 0.01%max