| ≥1 piece |
1 Main contents% ≥ 98.0
2 phosphorus pentoxide%≥ 18.3
3 Sodium oxide, as Na2O 15.5-19
4 Sulfate, as SO4 % ≤ 0.5
5. Cl %≥ 0.1%
5 Heavy metal, as Pb% ≤ 0.001
6 Arsenic, as As% ≤ 0.0003
7 Fluoride as F% ≤ 0.005
8 Water insoluble% ≤ 0.10