Hach Company has expanded its presence/absence product offering to include Modified Colitag, the fastest presence/absence test in the market—with a 16 or 22 hour testing timeframe. This allows drinking water facilities to begin a test at 5:00 p.m. and get EPA-approved results by 9:00am the following morning.

The product also provides unparalleled flexibility by offering two testing parameters in one product: a 16 hour or a 22 hour test. Being able to select between two tests in one product, allows drinking water facilities to set up the best timeframes for their staffing and to adjust tests as needed, without changing methods. This means less set-up time and provides rapid testing. In addition, Hach´s Modified Colitag provides users with valid results for up to 32 hours after the completion of the test. This best-in-class testing timeframe allows for a flexible workflow and also allows a facility to test over a weekend.

According to Kevin Hughes, product manager for Hach, 'Modified Colitag completes Hach´s presence/absence product offering, allowing Hach customers the convenience of a single source for their water testing needs.'