Side One: Colorex mSuperCARBA™
Colorex mSuperCARBA™ is a selective chromogenic medium that has been developed for the detection and isolation of carbapenemase producing Enterobacteriaceae (CPE). Nosocomial infections due to CPE are particularly difficult due to the limited treatment options. Therefore, this medium is designed to simplify the detection of CPE carriers and to allow for improved monitoring of high risk patient groups.
The distinctive colonial colouration of the various species can reduce the need for additional follow up testing allowing many positive results to be issued within 24 hours of receipt of the sample. All presumptive positive colonies should be confirmed for carbapenemase production.
Typical colour reactions are as follows –
Escherichia coli – Red/Pink colonies
Klebsiella spp., Enterobacter spp., & Citrobacter spp. – Metallic blue colonies
Other CP Gram –ve bacterial species (including Pseudomonas / Acinetobacter) – Colourless colonies
Non-CPE Gram-ve bacterial species – Inhibited
Gram +ve bacterial species & yeasts – Inhibited

Side Two: Colorex C3GR (Opaque)
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.
Typical colour reactions are as follows –
C3GR E.coli – Red colonies
C3GR Klebsiella / Enterobacter / Citrobacter – Metallic blue colonies
C3GR Proteus – Colonies with brown halo
Other C3GR Gram –ve bacterial species (Pseudomonas / Acinetobacter) – Colourless colonies
C3G Sensitive Gram –ve bacterial species – Inhibited
Gram + bacterial species – Inhibited
Yeasts – Inhibited