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Method in quality control of a spectrophotometer

  • US 6,980,285 B1
  • Filed: 06/10/1999
  • Issued: 12/27/2005
  • Est. Priority Date: 06/12/1998
  • Status: Expired due to Fees
First Claim
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1. A quality control method for a spectrophotometer, comprising the steps of:

  • determining with the spectrophotometer an absorption spectrum Am

    ) of a fluid quality control sample containing a dye selected from such dyes which provide the quality control sample with an absorption spectrum with a significant absorbance peak showing a steep flank, determining a wavelength shift Δ

    λ

    between the absorption Am

    ) of the actually measured quality control sample and a reference absorption spectrum A0

    ) of a reference quality control sample containing the dye stored in a memory of the spectrophotometer, and comparing Δ

    λ

    with Δ

    λ

    qc, wherein Δ

    λ

    qc is a wavelength shift assigned to the quality control sample.

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