High grade Fluid Lactose Medium is supplied by Micromaster. It is available in the form of a cream to yellow coloured homogenous free flowing powder which has a pH in the range of 6.7 to 7.1. It is advisable to store this product below 30C.

• Quantity provided: 100 g/pack

Fluid Lactose Medium is used as a pre-enrichment medium for the detection of coliform bacteria in water, dairy products and food samples. These bacteria are present in low numbers in food and other products and also may be in a stressed condition. Before subjecting them to selective enrichment, for maximum recovery a pre-enrichment is necessary. Also, the presence of non-coliform bacteria and substances indigenous to the sample may interfere with the growth and recovery of coliforms. Therefore, pre-enrichment in a non-selective medium facilitates detection of sublethally injured cells. When competing lactose utilizing bacteria are present in the test sample, a resulting drop in pH generates a bacteriostatic effect on the competing microflora. It is also used in the performance of microbial limit test for Salmonella species and Escherichia coli. Beef extract and pancreatic digest of gelatin provide essential nutrients for bacterial metabolism. Lactose is the sole source of fermentable carbohydrate. Growth with gas formation is a presumptive test for coliforms. Whenever there is larger inoculum multiple strength lactose broth is used.