... , balance amino acid and increase digestibility and save protein materials. L-lysine HCL, feed grade, 98.5%1) Appearance: white, light yellow or browish powder, odorless or ... with light peculiar lysine smell.2) Assay (on dry base): min 98.5%3) Specific rotation: +18.0~+21 ... %8) Arsenic (As): max 0.0002%9) PH (10g/dl):5.0-6.0 L-lysine HCL