Colitag™ Water Test System

Item No.  700002856  |  Catalog No.  9850

  • Test for total coliforms and E. coli in water
  • Offers results in 16–48 hours
  • Detects 1 CFU of total coliforms or E. coli
This item has shipping restrictions.
$151.37 each
$684.50 each
In stock
Out of stock
Expect availability 02/02/2024
Minimum quantity required: 1
This item must be ordered in multiples of one case. Quantity per case: 1

Colitag™ is a selective and differential ready-to-use, dehydrated medium for the simultaneous detection of total coliform bacteria and Escherichia coli in water.

Colitag is approved by the U.S. Environmental Protection Agency for compliance sample analyses as required by the Revised Total Coliform Rule. This method can be used as a presence/absence (P/A) test or for quantification of bacteria.

Colitag is capable of detecting 1 CFU of total coliforms or E. coli in a 100 mL water sample in 16–48 hours and does not require further confirmation or verification steps.

Colitag is intended to be used only for water quality research and analysis, by technically qualified individuals familiar with appropriate aseptic techniques for the identification of total coliforms and E. coli or under their supervision.

Brand Colitag™
Analyte Coliforms, E. coli
Application Potable Water Applications
Platform Dehydrated Culture Media
Result Type Presence/Absence, Qualitative
  • EPA approved for determination of total coliforms and E. coli in drinking water at 40 CFR 141.852(a)(5)
  • EPA approved for determining E. coli under the Ground Water Rule.
  • FDA approved for dairy source waters.
  • FDA inclusion in agricultural water.
Limit of Detection 1 CFU in a 100 mL sample
Matrix Water
Incubation Time 16 - 48 Hours
Storage Conditions 2 - 30°C (4 - 7°C preferred)
Quantity per Package 20 tests
Package Dimensions 4.40 in x 4.00 in x 2.60 in
Package Weight 0.10 lb
Colitag test kits, 100 mL format
  1. Incubator set to 35°C ± 0.5°
  2. Long wavelength (365 nanometer) UV lamp
  3. Sterile sample containers large enough to contain 100 mL water samples
  4. UV protective safety glasses


  1. Colitag Comparator
  2. Circulating, covered water bath capable of maintaining 35°C or 44.5°C for prewarming samples
  3. Control bacteria strains (see recommended quality control strains in product insert)


Our customers’ success is our shared success. Our experts are ready to train you and your team on our solutions, so you can rest easy knowing procedures are performed properly and yield accurate results. In addition, we provide certificates upon completion of training to provide you with the documentation needed for audit traceability.



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