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Colitag™ now with MPNTray™

Safe water starts with a simple test — and now, labs have a choice with Colitag.


Colitag is an EPA-approved method for detecting total coliforms and E. coli in drinking water, delivering compliant results in as little as 16 hours with Presence/Absence (P/A) and Most Probable Number (MPN) formats.

Now available with Neogen MPNTray, Colitag offers water testing labs a high-quality, cost-effective, and reliable choice—backed by Neogen’s trusted support.

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