Tergitol-TTC-NPS

Tergitol-TTC-NPS are used for the detection and colony count of Escherichia coli and coliforms in drinking water and food. The formulation is modified acc. to DIN EN ISO 9308-1 (2000). With Tergitol-TTC-NPS coliforms can be cultivated selectively and differentiated. The component Tergitol-7 inhibits the growth of gram-positive bacteria. TTC (2,3,5- Triphenyltetrazoliumchloride) is metabolized to red Formazan by most microorganisms. All coliforms can grow with Lactose and the acidic metabolite causes a color change of the pHindicator Bromothymolblue from blue to yellow. The medium is manufactured and quality tested in compliance with ISO 11133:2014 standard.