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ATP is quantified by measuring the light produced through its reaction with the naturally occurring firefly enzyme luciferase using a luminometer. The amount of light produced is directly proportional to the amount of ATP present in the sample. ATP tests can be used to: Control biological treatment reactors; Guide biocide dosing programs
Bacteriological water analysis is a method of analysing water to estimate the numbers of bacteria present and, if needed, to find out what sort of bacteria they are. It represents one aspect of water quality. It is a microbiological analytical procedure which uses samples of water and from these samples determines the concentration of bacteria ...
The Solid-Phase test is used for sediments, while either the Basic test or the 100% test is used for pore water. [12] Sediment testing: Microtox is used to test and evaluate the toxicity of various marine and freshwater sediments contaminated by metals and organics. Aqueous extracts of contaminated soils, drilling muds, and sludge.
A bacterial reference chart is used to determine the number of bacteria in the sample. Appropriate treatment is applied to the water source once abnormal levels of bacterial activity are noticed. Once water treatment is effective the bacterial count produced by the dip slide test should be low, approximately <10 4 . [ 2 ]
ATP:ATP is a common energy molecule that many researchers hold extensive knowledge of, thus carrying over to how one understands viability assays. The ATP Assay Concept is a well-known technique for determining the viability of cells using the assessment of ATP and a method known as "firefly luciferase". [5]
They gather in the upper part of the test tube but not the very top. 5: Aerotolerant organisms do not require oxygen as they metabolise energy anaerobically. Unlike obligate anaerobes however, they are not poisoned by oxygen. They can be found evenly spread throughout the test tube. Aerotolerant anaerobes use fermentation to produce ATP.
Before starting a test, one must confirm the cultured bacteria are Enterobacteriaceae, this is done by a quick oxidase test for cytochrome coxidase. Enterobacteriaceae are typically oxidase negative, meaning they either do not use oxygen as an electron acceptor in the electron transport chain , or they use a different cytochrome enzyme for ...
An assay (analysis) is never an isolated process, as it must be accompanied with pre- and post-analytic procedures. Both the communication order (the request to perform an assay plus related information) and the handling of the specimen itself (the collecting, documenting, transporting, and processing done before beginning the assay) are pre-analytic steps.
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