Membrane filtration to test for faecal contamination of water samples
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- Опубликовано: 24 авг 2024
- Thermotolerant faecal coliforms are indicator bacteria, which can form colonies at 44 degrees centigrade and can provide evidence of faecal contamination of water.
Membrane filtration is a means of testing the quality of water. This film presents an overview of the process. Water is filtered though a membrane having pore sizes smaller than the size of a bacterium. As water is filtered, bacteria are collected on the surface of the membrane. The bacteria can then be incubated to produce visible colonies suitable for analysis.