Colorex C3GR is a chromogenic screening medium for the detection of β-Lactamase producing Gram-negative bacteria in clinical specimens. The selectivity of the medium allows for detection of ESBL and/or AmpC producing isolates that exhibit a reduced susceptibility to 3rd generation cephalosporin antibiotics. The chromogenic reactions allow for species differentiation on presumptive positive isolates.
| Container | |
|---|---|
| Pack Size | |
| Shelf Life (days) | |
| Storage Conditions | 2-8°C – Store in the dark |
| Appearance | Firm Gel |
| Colour | |
| Recommended Incubation | Aerobically at 37°C for 18-24 hours |
| pH | |
| Fill Volume |
| Organisms | Ref. No | Result |
| Escherichia coli (ESBL) | NCTC 13441 | Red colonies |
| Klebsiella pnuemoniae (ESBL) | NCTC 13406 | Metallic blue colonies |
| Escherichia coli | NCTC 12241 | Inhibited |
| Klebisella pneumoniae | NCTC 9633 | Inhibited |
| Enterococcus faecalis | NCTC 12697 | Inhibited |
PP3053 – C3GR