A systemic gram positive ring device suited towards Gram Positive organisms carrying 8 antibiotic impregnated tips allowing the simultaneous application of the equivalent individual antimicrobial susceptibility test discs.

A paper ring 65mm in diameter with eight projecting arms. Each arm is impregnated with a different antibiotic identified using a letter from the key.

• Pack of 10 Mast Rings

Antibiotics include:

• Chloramphenicol - 25 µg
• Erythromycin - 5 µg
• Fusidic Acid - 10 µg
• Oxacillin - 10 µg
• Novobiocin - 5 µg
• Penicillin G - 1 unit
• Streptomycin - 10 µg
• Tetracycline - 25 µg

Also available as a pack of 50 Mast Rings (B8A18727)