M-TERGITOL-7 AGAR W/ MEAT EXTRACT

McFeters, Cameron and LeChevallier modified Tergitol 7 Agar to improve its selective and differential properties for the recovery of stressed coliforms from chlorinated water. They had reported that selective media such as M-Endo Agars used to isolate gram-negative bacteria recovered only 30% or less as compared to recovery between 71 – 100% of injured coliforms on Tergitol-7 Agar. In their study of surface and drinking water samples, including samples containing laboratory-stressed coliforms, M-Tergitol-7 Agar Base recovered 43% more coliforms than on M-Endo Agar and 36% more coliforms than by using M-Endo Agar with a resuscitation technique. In another study of 102 drinking water samples 8 to 38 fold more yield of coliforms has been reported on M-Tergitol-7 Agars as compared to .M-Endo Agar LES.

as a selective and di?erential medium for the recovery of injured coliform organisms from chlorinated water by membrane ?lter technique