How it works
ERC uses the same chromogenic β-galactosidase chemistry as AquaVial COLI / EX, then quantified on the Mobile Lab reader. Output is MPN/mL (2-100 range) which is comparable to a Standard Methods 9221 most-probable-number culture result.
Collect 1-5 mL water sample for testing and add it to test vial
Incubate
Insert the vial in the Mobile Lab reader
Read MPN/mL output on the display
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
Quantitative MPN/mL on-site without a benchtop MPN tube set or membrane filtration manifold.
Detection chemistry
How it detects
β-galactosidase
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
