Product category:
Medical, biological and bacteriological sensors
News Release from: Palintest | Subject: Colitag
Edited by the Processingtalk Editorial
Team on 10 September 2004
Colitag for fast coliform testing
The new Palintest Colitag system is a simple, reliable method for the detection, identification and confirmation of total coliforms and E.coli in 24 hours or less
The new Palintest Colitag system is a simple, reliable method for the detection, identification and confirmation of total coliforms and E.coli in 24 hours or less The system is pre-dispensed, ready for use, and a single inoculation can be performed in less than 2 minutes
This article was originally published on Processingtalk on 5 Jul 2005 at 8.00am (UK)
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A colour change following incubation provides a conclusive, easy-to-read result without the need for confirmatory tests or sub-cultures.
The examination of water for microbial pollution is vitally important.
Drinking water supplies, swimming pools and spas are all regularly monitored for the indicator organism E.coli.
The two currently accepted methods involve lengthy, labour intensive procedures, can take two to five days, are susceptible to interference by non-coliform bacteria, and the results are open to subjective interpretation.
Colitag is a pre-dispensed, dry blended reagent formulation.
It contains specific indicator/nutrients for total coliform and E.coli.
The system can be used for both 'Most Probable Number' (MPN) and 'Presence or Absence' (P/A) tests.
It is the only system that allows a simultaneous test for both MUG positive and indole positive E.coli, negating the risk of false negative results.
Its unique patented pH gradient technique means improved resuscitation of stressed coliforms and a lower false negative rate.
The reagent and sample are simply mixed in a sterile tube and then incubated at 35C.
The formation of a yellow colour indicates the presence of total coliforms.
E.coli is then indicated by fluorescence under UV light.
Coliform or E.coli positive water samples are detected at the 1 colony forming unit/100 ml level.
Colitag is a trademark of CPI International.
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