A read window that lasts
between 24 and 48 hours
Colisure coliform/E.coli results are definitive at 24 hours and can be read for up to 48 hours for convenience. This test's distinct magenta color means there's no mistaking a positive result. Colisure also suppresses high levels of non-coliforms
including aeromonas.
Colisure is US EPA-approved and is included in Standard
Methods for Examination of Water and Wastewater.