The Colifast Field Kit is a portable tool for on-site rapid detection of total coliforms, thermotolerant coliforms and Escherichia coli in water.

  ● Fast screening test

  ● Most probable number test

  ● With/without testing

  Rapid screening test can provide results within 15 minutes to 2 hours, and can detect as low as 1 cfu (colony forming unit)/100 ml water sample in the presence/absence of coliform bacteria.

  All tests have a convenient user manual, which is simple to operate and does not require laboratory skills.

  The system can detect as low as 1 cfu/100ml, and the results can be obtained within 6-14/15 hours.

  Method

  This technology is based on a chemical reaction between the substrate in the growth medium and the enzyme produced by E. coli. This chemical reaction produces a fluorescent product, which is measurable and related to the number of bacteria. The coliform growth medium contains an activator and growth nutrients as well as a compressed preparation that prevents the growth of non-coliform bacteria.

  Add 10 ml of water sample to E. coli growth medium. The next culture step is to select the total coliform and heat-resistant coliform at 37P or 44P respectively. After incubation, the sample was transferred to a test tube and placed in the coliform micro-detector for fluorescence measurement. Depending on the analysis, this step may need to be repeated to detect changes in the fluorescent substance over time.

  Colifast Field Kit

  ● 1E. coli small detector

  ● 18 bottles containing E. coli growth medium

  ● 1 constant temperature incubator (22V, 44℃)

  ● 1 bottle of blank solution (calibration)

  ● 1 power supply cable

  ● 1 bottle containing Cal 48 solution (calibration)

  ● 1 12V-220V car converter

   (Power consumption: about 3A when the petri dish is running)

  ● 20 3ml plastic pipettes for sample reading

   (graded in ml, use one for each test)

  ● 100 disposable test tubes

  ● 2 droppers filled with 0.5 M NaOH solution

  ● 100 disposable test tube caps

  ● 1 test tube rack

  ● 3 sterile, reusable 10ml syringes

  ● 5 pieces of Virko (optional for waste disinfection)

  ● 2 sterile filters

  ● 1 manual and quick guide

  ● 1 titration flask containing 10% sodium thiosulfate solution

   (for neutralizing residual chlorine)

  ● 10 result reports

  Apps

  ● Tracking the fecal pollution of the river

  ● Supervise the quality of bacteria in bathing places (fresh water or salt water)

  ● Industrial process control

  ● Water treatment process control

  ● Strengthen drinking water safety and rescue work