What is Colitag?

ColitagTM 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. ColitagTM is a 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.

How does it work?

Colitag’sTM strength lies in its ease of use. Simply add ColitagTM 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.

What about Controls?

To make a blank, dissolve one ColitagTM powdered test of the same lot being used for samples into 100mL sterile water. The blank may be used immediately or incubated along the test samples.

Bacterial control strains should be inoculated individually by transferring a loopful of fresh non-selective liquid culture into 100mL of sterile water mixed with the contents of one ColitagTM packet.

Microbiologics Control Strains

ATCC Control Strains

How can I order Colitag?

ColitagTM and ColitagTM accessories can be ordered in various quantities and combinations:

Part NumberDescriptionThiosulfateTamper Seal
4600-0011ColitagTM Test Kit, P/A, 100mL format, 20/pk//
4600-0013ColitagTM Test Kit, P/A, 100mL format, 100/pk//
4600-0040ColitagTM Comparator, P/A, ea.//
4600-0121C120mL Sterile ColitagTM Sample Vessel, w/ Thiosulfate, Screw Cap, Tamper Seal, Polystyrene, 100/pkYESYES
4600-0121FT120mL Sterile ColitagTM Sample Vessel, Flip Top in a High Clarity Polypropylene, 200/pkYESYES
4600-0111C120mL Sterile ColitagTM Sample Vessel, w/o Thiosulfate, Screw Cap, Tamper Seal, Polystyrene, 100/pkNOYES
4600-0111FT120mL Sterile ColitagTM Sample Vessel, w/o Thiosulfate, Flip Top in a High Clarity Polypropylene, 200/pkNOYES
4600-95000602365nm Handheld UV Lamp, 115V//
4600-95000603365nm Handheld UV Lamp, 230V//

Get started using Colitag™ and have your product certified today. Click here to receive a PDF copy of the Colitag™ Certification Requirements.