... powder2,Water content (Karl Fischer): ≤8%3,Acetate content (HPLC method): ≤10%4,Amino acid composition: ±10% theoretical value5,Purity (by ... ,Total impurity (by two HPLC methods): ≤2%8,Peptide content (Kjeldahl method): ≥80%9,Assay (anhydrous, without acetate): 95%-105%10,Bacterial ...