Contamination Testing

Lactobacillus Rapid Test

Lactobacillus Rapid Test
For the rapid detection of Lactobacillus contamination in soft drinks. In the spoilage of soft drinks, carbonated soft drinks in particular, Lactobacilli play an important role. In the LST-45 test the membrane filter is incubated on a nutrient medium and the colonies are then colored blue with a reagent solution. Even dense growth can be easily recognized. After a maximum of 24 hours, even a single colony can be detected on the membrane filter. Package includes: 50 membrane filters, reagent solution, and special nutrient media pads with dishes for 50 tests.

ColiCheck
Used for the presumptive identification of coliforms in water samples by a presence/absence technique. Bromocresol purple is a pH indicator that demonstrates a color change from purple to yellow in the presence of acid. Lactose fermenting organisms produce acid, which initiates the color change. The presence of coliforms is detected with greater sensitivity by use of a relatively large sample volume (100 ml) in a single bottle.

ColiCheck with MUG

ColiCheck with MUG
Used for the presumptive identification of coliforms and the determination of the presence of Escherichia coli in water samples by a presence/absence technique. The addition of MUG (4-methylumbelliferyl-b-D-glucuronide) which is a fluorogenic enzyme allows the media to selectively identify Escherichia coli. MUG is hydrolyzed by the Escherichia coli specific enzyme b-glucuronidase to release 4-methylumbelliferone which fluoresces under ultraviolet light (approx. 366 nm wavelength).