• Simplified Laboratory and Portable Instruments for Water & Wastewater Testing and Monitoring
  • Samplers and Flow Meters

Microbiology Testing

Hach Modified Colitag Presence-Absence Media

Product #: 8888003 (20/pk Snap-Pack)

Product #: 8888004 (100/pk Snap-Pack)

Product #: 8888005 (200/pk Snap-Pack)


Hach Modified Colitag™ is the fastest presence-absence test in the market. This allows drinking water facilities to begin a test at 5:00 p.m. and get EPA-approved results by 9:00 am the following morning. The product also provides unparalleled flexibility by offering two testing parameters in one product.

The Fastest Presence-Absence Test on the Market at 16 Hours

Fastest EPA-approved test for coliforms and E. coli. Test as late as 5:00 PM and still have your results by 9:00 AM the next day.

One Product that Supports 16- or 22-hour Test Methods

Allows for a standard test that requires less set-up, or a rapid test when necessary. One media for both tests reduces
complexity in certification and inventory.

Results are Valid for 48 Hours

Saturday’s tests can be read on Monday—no need to work all weekend. Results stay valid for 800% longer than the competition.

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