A Comparison of IDEXX Coliform and E. coli Tests

 
Compare Coliform and E. coli Tests
 

IDEXX coliform and E. coli tests offer you the flexibility to test multiple water samples for contamination, with results in 24 hours. Four products meet testing requirements around the world. The following information outlines the features of each test.

 

Colilert®

Sample size format: 10 ml and 100 ml

Time to results: 24–28 hours

Shelf life: 12 months

Quantification: Quanti-Tray®, Quanti-Tray®/2000 and MPN tubes

Positive result: Yellow for coliform and fluorescent for E. coli

 
  

Colilert®-18

  • Ideal for afternoon and rush samples as well as property, new well and new construction

Sample size format: 100 ml

Time to results: 18–22 hours

Shelf life: 15 months

Quantification: Quanti-Tray®, Quanti-Tray®/2000 and MPN tubes

Positive result: Yellow for coliform and fluorescent for E. coli

 
  

Colilert® 250

European market for bottled water

Sample size format: 250 ml

Time to results: 24–28 hours

Shelf life: 15 months

Positive result: Yellow for coliform and fluorescent for E. coli

 
  

Colisure®

  • Longest read window of 24–48 hours for read-time flexibility

Sample size format: 100 ml

Time to results: 24–48 hours

Shelf life: 12 months

Quantification: Quanti-Tray®, Quanti-Tray®/2000 and MPN tubes

Positive result: Magenta for coliform and fluorescent for E. coli