Feature

Colitest is a most convenient product line for the determination of the presence of absence of either total coliforms and E.coli in drinking water, surface and source water samples. It is a one-step, ready to use medium, to be combined with a water sample.

This products is designed to test water samples for total coliforms and E.coli in 24 hours and does not require further cofirmation or verification steps

Specification

• Method : DST (Defined Substrate Technology)
• Detection Limit : 1CFU in a 100mL Sample
• Culture time : 24hr
• Culture Temp : 35±1°C
• Product Storage : 2~30°C, away from light.
  

◆Test Procedure◆

1. Open the cap and unseal the half of the aluminum foil like the below.
   Put the 100 mL sample into the bottle.
2. Incubation at 35±1°C for 24 hours
   (If incubated at room temperature ( 20±5°C ) the incubation time is prolonged to 48 hours )

Detection

If Total coliforms are present, the medium changes color from near colorless to yellow, In addition, if any E.coli are present in the sample, a bright blue fluorescence is emitted when the sample is subjected to long wavelength (UV Lamp_365nm)

Negative ( Total coliforms ) Positive ( Total coliforms )

Positive (E.coli) Negative (E.coli)

◆Ordering Information◆