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The IDEXX Pseudalert Test is now Standard Method 9213G

Updated: Mar 7, 2023




Standard Methods

For the Examination of Water and Wastewater






The IDEXX Pseudalert Test is now Standard Method 9213G


The 24th Edition of Standard Methods for the Examination of Water and Wastewater was published earlier this year and now includes the IDEXX Pseudalert® Test. Method 9213G: Enzyme Substrate Test for Pseudomonas aeruginosa detection in 24 hours.


  • Pseudalert detects and enumerates P. aeruginosa primarily in building water, especially in hospitals, and hotel pools and spas.

  • Testing for P. aeruginosa is an important component of safely managing a building’s water system.

  • Same easy-to-use platform as the IDEXX Colilert® Test, and requires no additional confirmation steps.


The inclusion in Standard Methods is the third global standard inclusion for the IDEXX Pseudalert Test. It is also an ISO international standard, ISO 16266-2:2018, and is specified in the UK Standing Committee of Analysts Blue Book. This inclusion in Standard Methods is another demonstration of IDEXX’s commitment to high quality and reliable microbiological methods.



The CDC lists P. aeruginosa as a “serious threat".

The pathogen was estimated to cause over 32,600 hospitalizations and 2,700 deaths in the US in 20171. Best practices for controlling P. aeruginosa include microbiological testing, and testing is required in the UK, Germany, and France. The pathogen is also set to be a target of a forthcoming ASHRAE standard, ASHRAE 514.


Have questions? Contact your IDEXX representative at 1-800-321-0207.

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