XDG’s COLIKAT RAPID® showed a significantly higher recovery for E. Coli as compared to IDEXX’s Colilert-18® whereas both methods are equivalent regarding the enumeration of coliform bacteria.
IWW Rheinisch-Westfälisches Institut für Wasser Beratungs- und Entwicklungsgesellschaft mbH as independent and internationally recognized experts have carried out a comparison study to evaluate the equivalence of Colikat Rapid®and Idexx Laboratories Inc. Colilert-18® as reference method.
The study has been carried out in accordance with the requirements of EN ISO 17994:2014: Water Quality – Requirements for the comparison of the relative recovery of microorganisms by two quantitative methods:
“The study clearly proved that the XEBIOS‘s COLIKAT RAPID® method is equivalent to the IDEXX‘s COLILERT-18/QUANTI-Tray® method for the enumeration of coliform bacteria.
IWW Rheinisch-Westfälisches Institut für Wasser Beratungs- und Entwicklungsgesellschaft mbH,
For the target organism E. coli the study clearly proved that XEBIOS‘s COLIKAT RAPID® has a significantly higher recovery compared to IDEXX‘s reference method COLILERT- 18®/QUANTI-Tray®.”
January 2021
COLIKAT RAPID® is a fast test to simultaneously detect both total coliforms and Escherichia coli in water samples, providing the test’s results within 18 hours according to ISO 9308-2.
