Characters : A white or almost white powder
Identification : A TLC, complies
B Reaction with ferric chloride solution,
C Reaction with a-naphthol solution and
strong sodium hypochlorite solution, complies
D Reaction with a-naphthol solution, complies
E Reactions of sulphates, complies
Appearance of solution : Clarity: ≤2#
Colour: No more intense than
reference solution 3 6#
pH: 4.5~7.0
Streptomycin B : ≤ 3.0%
Loss on drying : ≤ 7.0%
Sulphated ash : ≤1.0%
Sulphate : 18.0%~21.5%
Colorimetric test : ≥90.0%
Assay (dried substance ) : ≥ 720 IU/mg
Sterility: Sterility
Bacterial endotoxins: <0.25IU/mg ,Complies
Abnormal toxicity: 1mg/0.5ml , Complies
Sodium metabisulphite: ≤0.3%
Veterinary medicine streptomycin sulfate