TOXI-CHROMOPAD

The Toxi-ChromoPad bioassay uses a novel mutant of the bacterium E. coli as the test organism. This bacterium was selected specifically for sensitivity to a wide range of toxic substances. The assay allows the bacteria to grow in direct contact with the toxicants in the sample, eliminating expensive extraction procedures.

The end point of the assay is an easy to interpret colour reaction. If the sample is toxic, no colour will develop; if the sample is non-toxic, a distinctive blue colour develops around the sample.

Features:

• Procedure is simple to perform and requires no prior laboratory experience.
• The required sample size per assay is less than 1 g (for solids) or less than 1 mL (for liquids) this enables convenient sample handling.
• Each kit contains all the reagents and disposable materials necessary to test (at least 4 samples, including dilutions and controls).

Applications:

• Delineation and selection of high priority samples.
• Confirmation of remedial actions.
• Monitoring effluents for changes in toxicity levels.
• Detection of potential toxicity in solid (soils, sediments, sludge or other waste material) and aqueous samples.