Application Selective medium acc. to Mallmann and Darby (1941) for the presumptive testing for coliform and their selective enrichment in the examination of water, dairy products and food.Recommended by the "Schweizerisches Lebensmittelbuch" 5th ed., chapter 56A.The difference to Fluka No. 17349 is that Casein Peptone is used (instead of Tryptose)