Antibiotics Test Rings, pkt/50

Antibiotics Test Rings for use in culture dish.pkt/50 (mastrings)
Ampicillin 10ug.Grey,,Chloramphenicol 25ug Green ,Penicillin G 1 unit, Pink ,Streptomycin 10ug White , Sulphatriad 200ug Mauve, Tetracycline 25ug Brown