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Continuous Toxicity Monitoring

Microtox® CTM makes fully automatic, continuous, on-line testing a reality. It has broad range detection capabilities that provide rapid early warning of contamination by several thousand known chemicals. This enables containment measures to be actioned in time to protect against serious contamination events. A major advantage over most analytical methods is that Microtox® CTM is able to detect contaminants whether or not there is prior knowledge of the potential source or nature of contamination.

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Other on-line toxicity monitors take intermittent samples and provide only one test result in typically 15-30 minutes. This means that brief events may be missed and leads to a high incidence of false alarms. Microtox® CTM takes two measurements per second, significantly reducing the risk of false alarms.

Process Explained

Biosensor tests using bioluminescent bacteria have been in use for 30 years and their capability in detecting toxic substances is well understood. They use the principle that certain strains of bacteria emit light when healthy. When they are exposed to toxic substances, the amount of light emitted reduces. The greater the toxicity of the sample,the lower the light emitted.

Measuring changes in light between healthy bacteria and bacteria exposed to toxic substances will therefore indicate the presence of a toxin in a water sample. Existing tests are off-line or intermittent and require high levels of skilled operator intervention, unlike Microtox® CTM.

  • Real-time and truly continuous monitoring
  • 4-week, autonomous operating cycle
  • No manual intervention except for monthly maintenance Automatic diagnosis of system faults
  • Remote control, data analysis and troubleshooting
  • Detects thousands of chemical compounds with lower levels of detection than most other biosensor systems

Modernwater Toxicity Water Brochure
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