| Project | Indicator | |
| GB15572-1995 | USP35 | |
|
Content (as anhydrous) C4H6CaO4 % |
98.0～102.0 | 99.0-100.5 |
| PH | June 8 | 6.3-9.6 |
| Sulfate %≤ | 0.1 | 0.06 |
| Nitrate %≤ | —— | qualified |
| Chloride %≤ | 0.05 | 0.05 |
| Heavy metal (in Pb) %≤ | 0.0025 | 0.0025 |
| Lead (Pb) %≤ | -- | 0.001 |
| Arsenic salt ≤ | 0.00% | 3ppm |
| Magnesium salt and alkali metal% ≤ | 1 | -- |
| Barium salt (Ba) | Compliance | Compliance |
| Moisture %≤ | 7 | 7 |
| Fluoride (in F) %≤ | 0.005 | 0.005 |
| Easy oxide | -- | qualified |