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Modified Colitag™ is the fastest EPA approved presence/absence test available today. To get started using Modified Colitag in your state, and to access contact information for your state regulator, please view our PDF.

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Colitag™ is a US EPA approved Presence/Absence and MPN enzyme substrate test that provides 16-48 hour total coliform & E. coli determinations and detects 1 MPN of total coliform or E. coli bacteria per 100mL water sample. Coitag™ is relied upon by laboratories in more than 2 dozen countries.

Run it when you're ready. Read it when you're ready.

“I no longer have to pay overtime to ensure samples are read in the right time frame. I wish I started using this sooner.”

Colitag™ offers unrivaled flexibility in the market, allowing you to use one test instead of three to read your samples at any time within 16-48 hours. Eliminate the need to buy three separate tests to get the job done on your own time.

Improve Laboratory Efficiency.

“My lab is operating much more efficiently, and more projects are getting done.”

Colitag™’s bright blue fluorescence indicating a positive E. coli sample eliminates the need for time-consuming confirmations created by media that emits a less-intense fluorescence. This teamed with the flexible reading window allows you to streamline your lab processes.

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