Which analyzer uses a reflectance-based detection method?

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Multiple Choice

Which analyzer uses a reflectance-based detection method?

Reflectance-based detection measures how much light is reflected off a colored or developed reagent surface rather than how much light passes through a liquid. This approach is typical in dry chemistry systems, where reagents are pre-deposited on a slide and the color change on the surface is read by detecting reflected light at a specific wavelength. The analyzer that uses this method shines light on such a reagent slide and interprets the reflected light intensity as the analyte concentration. The Vitros 950 is a dry-chemistry analyzer that employs reflectance photometry. It reads the color on the reagent slide by measuring reflected light, which directly corresponds to the amount of analyte present. Other listed analyzers rely on traditional absorbance photometry in cuvettes or similar setups, where light passes through a liquid and the transmitted light is measured. Those methods detect changes in absorbance, not reflectance off a surface, so they do not use reflectance-based detection.

Reflectance-based detection measures how much light is reflected off a colored or developed reagent surface rather than how much light passes through a liquid. This approach is typical in dry chemistry systems, where reagents are pre-deposited on a slide and the color change on the surface is read by detecting reflected light at a specific wavelength. The analyzer that uses this method shines light on such a reagent slide and interprets the reflected light intensity as the analyte concentration.

The Vitros 950 is a dry-chemistry analyzer that employs reflectance photometry. It reads the color on the reagent slide by measuring reflected light, which directly corresponds to the amount of analyte present.

Other listed analyzers rely on traditional absorbance photometry in cuvettes or similar setups, where light passes through a liquid and the transmitted light is measured. Those methods detect changes in absorbance, not reflectance off a surface, so they do not use reflectance-based detection.

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