Liquid Media

Ready-to-use media considerably reduce the preparation time in quality control laboratories and also effectively reduce the risks of cross contamination. GVS is cooperating closely with quality assurance managers in the industry in the development of its own media and test kits.  This intensive product development has produced a range of products that is being used to monitor production plants and conduct microbiological checks on raw materials through to final product release in laboratories in more than 40 countries.

Features and Benefits:

• Wide range of products satisfies even special customer requirements
• Optimal media stability, sterility, and reproducibility
• Less time-consuming, higher productivity
• Batch-specific quality certificate in each pack

Applications Microbiological analysis of: 

• Drinking water
• Surface water
• Recreational water
• Purified water

MI Broth and MI Agar 

MI Broth detects the presence of coliform bacteria by the production of b-galactosidase, which cleaves the substrate MUGal to produce 4-methylumbelliferone, which fluoresces on exposure to UV light. Non-coliforms do not produce this enzyme and therefore do not fluoresce on the medium. Escherichia coli is detected by the compound IBDG. The b-glucuronidase produced by Escherichia coli cleaves the substrate to produce a blue indigo color in the colonies. As Escherichia coli is also a total coliform, and also produces b-galactosidase, it will also fluoresce. The antibiotic cefsulodin is present to inhibit the growth of gram-positive bacteria and some non-coliform gram-negative bacteria that can cause false positive reactions.