How it works
EZ Coliform is the pouch-format version of AquaVial COLI / EX Coliform — chromogenic β-galactosidase chemistry pre-loaded in a 10 mL volume. Designed for single-use screening at 1 CFU/10 mL (≈0.1 CFU/mL).
Collect 10 mL water sample for testing and add it to test vial
Incubate
Incubate at recommended temp for the listed time
Read by visible color change; positive triggers retest/action
Sensitivity matrix
Detection limits
Comparison
vs. traditional lab testing
Membrane filtration lab culture (ISO 9308-1 / Standard Methods 9221)
Off-site, multi-day turnaround. Requires lab account, membrane filtration manifold, and qualified microbiology technician. Per-test cost from $40–$120 plus shipping.
On-site, same-day result
Cheap one-use format ($8 distributor) — pass / fail in 8-24 hr without a lab.
Detection chemistry
How it detects
β-galactosidase (10 mL sample volume)
Detects coliforms through enzyme-mediated color change. Galactosidase activity hydrolyzes the chromogenic substrate, producing a visible color shift proportional to bacterial concentration.
Regulatory & standards
Compliance references
- ISO 9001:2015 QMS
- Standard Methods 9221 reference
