m-FC-NPS are used for the detection and colony count of fecal coliforms in water, food and other samples. With m-FC-NPS fecal coliforms can be cultivated selectively. Bile salts inhibit the growth of gram-positive bacteria and while all coliforms are able to use Lactose as carbon source, only fecal coliforms can grow at an incubation temperature of 44 °C. Aniline blue and Rosolic acid form the color indicator system. The medium is manufactured and quality tested in compliance with ISO 11133:2014 standard.