Chromocult® Coliform Agar
Simultaneous detection of Coliform bacteria and E. coli in water.
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Simultaneous detection of Coliform bacteria and E. coli in water. Weniger
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The new ISO 9308 part 1 (2014) describes the usage of membrane filtration and a chromogenic Coliform agar for enumeration of Escherichia coli and Coliform bacteria in:
- drinking water,
- disinfected pool water,
- and finished water from treatment plants.
Our Chromocult® Coliform Agar (CCA) is the original: the only chromogenic culture medium which was used for all validation studies that were needed to prepare this new ISO 9308-1 standard. The procedure takes much less time for positive results than the 48 hours needed for the previous ISO 9308 part 1 (2000) method using Lactose TTC agar. The new method requires no additional culture media for result confirmation.
Advantages of the new ISO 9308-1 method (2014) over ISO 9308-1 (2000):
- Save time: Up to 24 hours faster than the old Lactose TTC agar method.
- Clear results: Easy counting of E. coli and Coliform bacteria by color when using CCA.
- Save costs: No additional culture media needed for confirmation. Instead, it ensures a one-minute confirmation of Coliform bacteria using an inexpensive oxidase-based test strip.
- Easier-to-do: The CCA method is easier to perform than the Lactose TTC agar method.