EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of EN ISO 9308-1 testing. EN ISO 9308-1 specifies a method for enumeration of Escherichia coli (E. coli) and coliform bacteria.
The method is based on membrane filtration followed by culture on chromogenic coliform agar medium and calculating the number of target organisms in the sample.
Due to the low selectivity of the differential agar medium, background growth may interfere with reliable enumeration of E. coli and coliform bacteria, for example in surface waters or shallow well waters. This method is not suitable for such waters.
EN ISO 9308-1 is particularly suitable for waters with low bacterial counts that will result in less than 100 total colonies on chromogenic coliform agar (CCA). These can be drinking water, disinfected pool water or finished water from drinking water treatment plants.
Some strains of E. coli that are β-D-glucuronidase negative, such as Escherichia coli O157, will not be detected as E. coli. Because they are β-D-galactosidase positive, they will appear as coliform bacteria on this chromogenic agar.
EUROLAB assists manufacturers with EN ISO 9308-1 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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