G minus-27-OD311-1PK is 8-in-one multi disc, referred to as an octo disc under HiMedia catalogue. It is designed for testing antimicrobial susceptibility of bacteria for 8 different antibiotics at a time. Each pack of OD311-1PK contains 10 flat circular rings; each ring containing 8 equidistance arms at the periphery. At the end of the each arm, there is one antibiotic disc with 6mm diameter. Each disc is saturated with a different antibiotic and the concentration and symbol of the respective antibiotic printed on it. Each disc is at least 24mm apart from the other disc. G minus-27-OD311-1PK octo discs are ideal to test Gram Negative bacteria. OD311-1PK disc can fit on 120 mm media plates. Generally used on Mueller Hinton Agar plates.

Composition G minus-27-OD311-1PK:

Cefixime (CFM) 5 mcg

Polymyxin (B PB) 300 units

Norfloxacin ( NX) 10 mcg

Netilimicin (NET) 30 mcg

Levofloxacin (LE )5 mcg

Cefoperazone CPZ (75) mcg

Colistin CL (10) mcg

Aztreonam AT (30) mcg

Storage and shelf life: It is advised to store the discs always at -200C after opening. The disc loses its stability at higher temperature (450C).