ANTIBIOTIC AGAR A 2
Base agar for the microbiological assay of antibiotics.
Code: CB1/8502
Typical formula g/l
| Peptone | 6.0 |
| Yeast extract | 3.0 |
| Beef extract | 1.5 |
| Agar | 15.0 |
pH 6.6 +/- 0.1
Directions and Description
Suspend 25.5g in 1000ml of cold distilled water; heat to boiling and sterilise by autoclaving at 121°C for 15 minutes. The medium is prepared according to the specifications given in FDA, 21 CFR and in USP XXIV Ed. It corresponds to Medium no.2 of Grove and Randall: base agar for the plate assay of antibiotics. It is used as the base agar in the microbiological assay of bacitracin and penicillin G
Storage
Dehydrated medium: 15-30°C
User prepared flasks: 1 month at 2-8°C