Microbiology Product Lines:

EPA Approval

Colitag Benefits  

What is Colitag™?

Colitag is a 16- 48 hour water test (P/A and MPN) that detects as few as 1 MPN of E. coli and other coliform bacteria in 100mL of water. Colitag is US EPA approved for use as a presence/absence test and in the Most Probable Number (MPN) format as specified in Standard Method 9221 for compliance monitoring of total coliforms and E.coli in drinking water.

Colitag Product Brochure

Colitag Certification Requirements by State

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 follow the link below.

State Certification Information - Interactive map

This interactive map allows you to click on your state to see the actions required for certification (to use Modified Colitag for Compliance Purposes). You can also download the PDF version of each state's requirements and their point of contact.

State Certification Information - PDF

How Does Colitag Work?

Colitag's strength lies in its ease of use. Simply add Colitag to your 100ml sample, incubate for between 16 & 48 hours, use a simple visual check for coliforms in the first instance, then a fluorescence check to determine E.coli bacteria presence.

Watch Colitag in action!