The 3M Petrifilm High-Sensitivity Coliform Count (HSCC) Plate is a sample-ready culture medium system which contains modified Violet Red Bile (VRB) nutrients, a cold-water-soluble gelling agent, and a tetrazolium indicator that facilitates colony enumeration. Petrifilm HSCC plates are useful for the enumeration of low levels coliform bacteria in the food and dairy industries. A 5-ml sample is plated onto one plate. This allows a 1-coliform-per-gram sensitivity if a 1:5 dilution of product is made. A 2-coliform-per-gram sensitivity is achieved if a 1:10 dilution is used.
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