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MULTIPLE WAVELENGTH LIGHT SOURCE FOR COLORIMETRIC MEASUREMENT

  • US 20150099303A1
  • Filed: 09/30/2014
  • Published: 04/09/2015
  • Est. Priority Date: 10/03/2013
  • Status: Active Grant
First Claim
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1. A colorimetric wet chemistry analyzer for determining a concentration of an analyte of interest in a sample, the analyzer comprising:

  • a reaction chamber configured to receive the sample and facilitate a reaction that changes a color of the sample based on the concentration of the analyte of interest;

    a photometric cell operably coupled to the reaction chamber to receive the sample and direct illumination therethrough, the photometric cell having a first illumination source configured to provide illumination at a first wavelength through the photometric cell, a second illumination source configured to provide illumination at a second wavelength through the photometric cell, where the second wavelength is different than the first wavelength, and a photodetector configured to detect illumination passing through the photometric cell; and

    a controller coupled to the first illumination source, the second illumination source and the photodetector, the controller being configured to provide an indication of concentration relative to the analyte of interest based on a signal from the photodetector.

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