How it works
COLI100 is the 100 mL-volume version of AquaVial COLI chemistry — same β-galactosidase substrate, but the 100 mL sample volume lifts sensitivity to the regulated drinking-water level (1 CFU/100 mL). Designed as a single-test consumer / verification pack.
Pour 100 mL drinking water into the supplied bottle
incubate
read color change
Read visible color change; positive triggers retest / boil-water 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
Drinking-water-spec sensitivity in a single one-shot pouch — no lab account, no membrane filtration.
Detection chemistry
How it detects
β-galactosidase (100 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
