Colilert-18 for 100ml Sample Pk 20

Colilert-18 provides fast, accurate results in just 18 hours, allowing laboratories, water utilities, and environmental professionals to make confident decisions about water quality.

Key Features 

• Dual Detection: Simultaneously identifies total coliforms and E. coli in a single test.

• Fast Results: Confirm results in as little as 18 hours — perfect for overnight incubation and next-day reporting.

• ISO-Certified Accuracy: Compliant with ISO 9308-2:2012, and approved by international and UK regulatory authorities, including the Drinking Water Inspectorate (DWI).

• Defined Substrate Technology (DST): Proprietary method ensures high specificity with minimal false positives.

• User-Friendly: No media preparation — simply add reagent to your sample and incubate.

• Flexible Testing Options: Compatible with presence/absence and quantitative (Quanti-Tray/2000) formats.

• Long Shelf Life: Up to 15 months at room temperature for convenient storage and reduced waste.

How Colilert-18 Works

Colilert-18 uses enzyme substrates ONPG and MUG to detect the presence of indicator bacteria.

• Yellow colour indicates total coliforms.

• Yellow with fluorescence under UV light confirms E. coli.
  The method delivers unambiguous, easy-to-interpret results without complex laboratory procedures.

Applications

• Drinking water testing

• Wastewater and surface water monitoring

• Groundwater and source-water surveillance

• Cooling towers and industrial water systems

• Recreational and bathing water testing

Technical Details

• Product Code: 98/08876/00

• Format: 100 pack reagent snap-packs (unit-dose)

• Incubation Time: 18 ± 2 hours at 35 °C ± 0.5 °C

• Method Reference: ISO 9308-2:2012

• Regulatory Approval: UK DWI, USEPA, ISO

View safety data sheet