Colitag : ชุดตรวจวัด Coliform

The examination of water for microbial pollution is a major health undertaking. Drinking water supplies, swimming pools and spas are all regularly monitored for the indicator organism Escherichia coli (E.coli). Currently there are two accepted methods in use – Multiple Tube fermentation (MTF) and Membrane Filtration (MF). Both are designed to enumerate the secondary indicator group, total coliforms. There are several drawbacks to these current methods of bacteriological testing – in particular the time taken to generate confirmed positive results, usually two to five days. Moreover, the subjective nature of interpreting results, the lengthy and labour intensive procedure involved and the susceptibility to interference by non-coliform heterotrophic bacteria, all detract from these methods.