| ITEMS | USP30 | Feed Grade | Feed Grade |
| Content ,% | 98.0-100.5 | >=98.0 | >=95.0 |
| Loss on drying ,% | 0.5 | 2.0 | 2.0 |
| Heavy metalsPb,% | =<0.001 | =<0.001 | =<0.001 |
| As,% | -- | =<0.0002 | =<0.0002 |
| Residue on ignition,% | =<0.1 | -- | -- |
| pH1+4 aqueous solution | 0.8-1.2 | ||
| Anti-caking agent | 0 | 0 | 3.0 |