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Presence/Absence Test with MUG; disposable; pk/50. Presence-absence tests are a convenient way to detect coliforms and E. Coli in your water system. Conforms to Standard Methods 9221D.

Presence/Absence Test with MUG; disposable; pk/12. Save time and simplify lab and field testing with Hach prepared P/A media Report Total Coliform values with EPA accepted Presence-Absence bottles an

Presence/Absence test for coliforms; Disposable; pk/50. Save time and simplify lab and field testing with Hach prepared P/A media

PathoScreen Field Test Kit. Enough media for 100 presence-absence tests using 20 mL sample, or 20 MPN tests. Reusable glass vials, and foil-pillowed media, increases shelflife. No refrigeration requir

Coliforms are reliable indicator organisms for testing water quality because they travel with disease-producing microorganisms and are easy to isolate. The presence of coliforms in drinking water indi