Coliform form blue to turquoise colonies by chromogenic substrate for enzyme.
Escherichia coli, which is part of coliform, form blue to turquoise colonies.
This chromogenic substrate for enzyme indicates β-galactosidase produced by coliform. This product can be used as an alternative to ISO 4832.
Culture condition |
35 ± 1 °C, 24 hours |
|---|---|
Colony |
blue to turquoise |
Measurement range |
≤300 colonies/sheet |
Warranty period |
1.5 years after manufacture (unopened aluminum pouch) |
Storage conditions |
Refrigerate required (2-15 °C) |
International certification |
MicroVal No. 2017LR70、AOAC-PTM No. 011901 |