E.coli and Thermotolerant Coliform Bacteria Detection Plate (24)

FSD-113

E.coli and Thermotolerant Coliform Bacteria Detection Plate (24)

E.coli and Thermotolerant Coliform Bacteria Detection Plate (24) is designed for the detection of Escherichia coliform and thermotolerant coliform bacteria.

This E.coli and Thermotolerant Coliform Bacteria Detection Plate (24) applies to rapid detection of Escherichia coliform and thermotolerant coliform bacteria of all kinds of water. This plate use enzyme substrate technology, containing X-GLUC/blue which is chromogenic substrate of thermotolerant coliform glucuronidase, as well as X-Gal/red which is chromogenic substrate of thermotolerant coliform group galactosidase. Escherichia will turn blue on these count plates, and thermotolerant coliform will turn purple red or blue on them after culture at 44.5℃. Colonies of thermotolerant coliform would show purple red or blue on detection plate, and those show blue are Escherichia coliform. There is not any purple red or blue spot if negative result.

Thermotolerant coliform is part of total coliform group. If the temperature of incubator is up to 44-45 ℃, those can grow and ferment lactose are thermotolerant coliform. They contain some of Escherichia, Klebsiella, Enterobacter, Citrobacter rodentia. Among them, Escherichia is most accurate and exclusive indicator of feces. Compared with total coliform group, the fact that thermotolerant coliform is checked out shows the water sample is dirtier and the greater possibility of presence of intestinal pathogenic bacteria and food pathogens.

This kind of count plate should be stored in the fridge at 4-10 ℃, and the expiration time is one year. Once the package is opened, those unused count plates should be placed back to the package and then seal it well. Store them in the fridge and exhaust them within one month. Condensation may occur in high humid environment, it is better to warm it back to room temperature before unfolding the package.

According to national drinking water sanitary standard, if total coliform is tested from water sample, further test should be done to find it is Escherichia or thermotolerant coliform. If there is not any total coliform tested from water sample, then it is no need to do the further test.

Rapid Detection

Water