A PRELIMINARY-STUDY OF THE USE OF COLILERT FOR WATER-QUALITY MONITORING

The Colilert presence/absence test has been compared with membrane fil tration using membrane lauryl sulphate broth for the detection of coli forms and Escherichia coli in a number of different types of water. Co lilert appears to give results which are essentially the same as those obtained by membrane filtration whilst taking considerably less time to perform. The data generated in this study are in agreement with a l arge number of studies published in the United States and suggest that a large comparative study with drinking water samples is warranted.