Aquagenx GEL EC Kit

Easier, Faster CFU Test Results in the Field

Compare the Aquagenx GEL EC Kit to Other Tests


The GEL EC CFU Kit is simple and easy to use. Users count E. coli colonies right in our GEL Bag

It does not need membrane filtration equipment, complicated procedures or intensive training.

See how our GEL EC CFU Kit compares to membrane filtration CFU water quality test kits and methods.

Compare to IDEXX Colilert


The World Health Organization (WHO) engaged KWR Laboratory to evaluate the Aquagenx GEL EC CFU Kit against standard method IDEXX Colilert 2000. The report yielded outstanding results.
WHO Report GEL EC CFU Kit→

Compare to Membrane Filtration Methods

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Compare Test Features

Download PDF of Table

Aquagenx GEL EC CFU Kit

Membrane Filtration Methods 
Testing method Colony Forming Units (CFU) Colony Forming Units (CFU)
Microbial indicator E. coli Depends on product/system: Thermotolerant (fecal) Coliforms; E. coli
Usability Easy for anyone to use, designed for field testing Requires intensive training, challenging to use for field testing
Portability Lightweight, easy to carry and transport Can be heavy and/or cumbersome, multiple components
Incubation Ambient temperature incubation >25° Celsius Requires incubator and temperature control
Components Thio-Bag, GEL Bag, E. coli medium, GEL powder Filter and funnel apparatus, vacuum system (vacuum flask and vacuum source, typically an electrical pump or a vacuum line in a lab) or large syringe, culture plates, petri dishes, gridded membrane filters, multiple measuring devices, absorbent pads, volume dispensers (e.g., sterile pipettes and/or graduated cylinders or centrifuge tubes with volume marks), tweezers, heat source to flame tweezers
Procedures Eight easy steps Time consuming with multiple steps: equipment set-up and preparation, culture media preparation (or costly sterile media in ampoules), sterilization of multiple pieces of equipment
Growth medium storage Store at 10-25° Celsius in a dry environment, refrigeration is optional Requires refrigeration and cold chain
Post-test disposables and reusables No reusables to clean or sterilize. To decontaminate sample, add liquid bleach or chlorine tablets to GEL bag. Or, treat with heat >60°C. After 30 minutes, pour contents into a sink, toilet or hole in ground and safely dispose the GEL Bag with solid waste. Disposables: Petri dishes (and possibly sample collection bag, large syringe for pulling a vacuum, disposable pipettes and disposable graduated centrifuge tubes) that must be decontaminated prior to disposal (e.g., with heat >60 degrees C or free chlorine). Reusables: Multiple materials and equipment that require decontamination, cleaning and sterilization (e.g., filter apparatus, pipettes and/or graduated cylinders, vacuum flask, sample collection bottles, etc.)

GEL EC Kit Components

Single packet of Aquagenx GEL EC CFU Kit powder growth medium for E. coli

E. coli Medium

Aquagenx E. coli medium for GEL test dissolves quickly

Single Stand-Up Thio-Bag to collect 100 mL water sample

Whirl-Pak Thio-Bag

100 mL Whirl-Pak Thio-Bag for sample collection 

Single packet of GEL Powder included in medium in Aquagenx GEL AMR EC Kits

GEL Powder

GEL powder makes sample gelatinous

Single GEL Bag included in Aquagenx GEL EC CFU Kits


GEL bag holds the sample during incubation period