Colistin Sulfate ( Bulk ) CVP EP standard 2,US FDA GMP inspection approved ... pharm 1,APIs 2,cas1264-72-8 EP6 3,Colistin Sulfate 4,White or almost white powder 5,Potency (MUI):Dried ... Optical Rotation:-63°to -73° Assay (Dried bais) :77%min Sulfate:16.0 to 18.0% E3 (Dried bais) :10.0 ... substances:23.0%max About Us :Factory:Lab Photosworkshops Colistin Sulfate premix 10% GMP standard