Description
The objective of this slide presentation was to evaluate enumeration methods for the detection ofcoliform bacteria in water samples using a precise numberof organisms. Escherichia coli (ATCC = 11775) and Enterobacteraerogenes (ATCC = 13048) BioBall™ cultures were used.All methods were tested 10 times using each culture andthe mean number ¿¿¿¿ SD of all readings was calculated. Eight methods were evaluated using BioBall™ cultures:membrane filtration;mFC and mLS;defined substrate technology systems;Colilert™ and Colisure™multiple tube fermentation (MPN);Petrifilm;standard plate count; and, pour and spread plate method. Results of the methods are given, and conclusions were that: Petrifilm and PCA-P produced the most accurate andconsistent results(1 mL);Colilert produced the most consistent results with the lowestcoefficient of variation (100 mL);MF, Colisure and MPN may be producing results withgreater variability; and,BioBall™ is a very useful quality control tool for evaluatingthe efficiency of water testing procedures. Includes figures.
Product Details
- Edition:
- Vol. – No.
- Published:
- 06/01/2006
- Number of Pages:
- 38
- File Size:
- 1 file , 1 MB
- Note:
- This product is unavailable in Ukraine, Russia, Belarus
