| ITEMS | Specification |
| Appearance | Light brown granule |
| Identity | Corresponds |
| Assay (L-lysine, On Dry Basis) | >=51% |
| Assay (L-lysine HCl, On Dry Basis) | >=65% |
| Sulfate | Pass Test |
| Loss On Drying | =<4% |
| Residue On Ignition | =<4% |
| Ammonium salt (as NH4) | =<1% |
| Heavy Metals (as Pb) mg/kg | =<20 |
| Arsenic mg/kg | =<3 |
| PH ( 0.3g+50ml water 25°C ) | 3.0-5.0 |