The sample collection, incubation, and reading can all be done in the same vessel. Since most noncoliforms do not have these enzymes, they are unable to grow and interfere.
This approach is different from traditional media, which provide a nutrient-rich environment that supports the growth of both target organisms and nontargets.
When nontargets grow and mimic target organisms, false positives occur. Growth of nontargets can also suppress target organisms and give false negatives in traditional media. With Quanti-Tray, a mL sample is divided into 51 wells. Then the most-probable-number approach is used to determine the number of bacteria in the original sample. Automation minimizes hands-on time and maximizes throughput up to four samples per minute. The relatively large number of wells provides a high counting range of 1— without dilutions and very tight 95 percent confidence limits.
The system does not require the use of test tubes, Durham tubes, or any dilutions. Weber Scientific distributes laboratory supplies and equipment throughout North America and is focused on the specialized testing needs of the dairy and food industries. This website requires certain cookies to work and uses other cookies to help you have the best experience. By visiting this website, certain cookies have already been set, which you may delete and block. Lopez-Roldan, R. On-line bacteriological detection in water.
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