... %19.12-19.5119.18Ammonium salt (NH4), %≤0.02Conforms Sulfate (SO4), %≤0.020ConformsIron (Fe), ppm≤107Heavy metals (Pb), ppm≤107Arsenic ... ConformsLoss on drying, %≤0.400.23Residue on ignition, (sulfated)%≤0.100.05Assay 99.0% ~ 100.5%99.5%pH5.0 ~ 6.05.7Conclusion: ... -Lysine HCl 98.5% (Feed Grade) L-Lysine Sulphate 65% (Feed Grade) L-Lysine Sulphate 70% (Feed Grade) Both are fermented from conventionally ...