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| Content Provider | PubMed Central |
|---|---|
| Author | Green, B. L. Clausen, E. M. Litsky, W. |
| Abstract | Reports indicate that the standard membrane filter (MF) technique for recovery of fecal coliform bacteria from chlorinated sewage effluents is less effective than the multiple-tube (or most-probable-number [MPN]) procedure. A modified MF method was developed that requires a preincubation period of 5 h at 35 degrees C followed by 18+/-1 h at 44.5 degrees C. This procedure was evaluated by using both laboratory- and plant-chlorinated primary and secondary effluents. Results obtained by the modified MF method compared favorably with those of the MPN technique for the enumeration of fecal coliforms from chlorinated effluent. Agreement between these two methods was greatest with samples from secondary treatment plants. The average recovery of fecal coliforms by the standard MF procedure was only 14% that of the MPN method, whereas with the modified technique recovery was increased to 68% of the MPN counts. Enhanced recovery resulting from a simple modification in the incubation schedule makes the MF method a valuable adjunct for enumerating fecal coliforms from chlorinated effluents. |
| Starting Page | 1259 |
| File Format | |
| ISSN | 10985336 |
| e-ISSN | 10985336 |
| Journal | Applied and Environmental Microbiology |
| Issue Number | 6 |
| Volume Number | 33 |
| Language | English |
| Publisher Date | 1977-06-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Food Science Applied Microbiology and Biotechnology Biotechnology |
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