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Analytical method and apparatus for liquid sample using near infrared spectroscopy

  • US 20020084415A1
  • Filed: 03/16/2001
  • Published: 07/04/2002
  • Est. Priority Date: 10/17/2000
  • Status: Abandoned Application
First Claim
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1. An analytical method for a liquid sample using near infrared spectroscopy comprising the steps of:

  • applying near infrared light in a short wavelength range to the liquid sample within a test tube from the outside;

    detecting diffusely (scattered) reflected light, diffusely transmitted light, or transmitted and reflected light from the liquid sample by an optical sensor to measure a near infrared absorption spectrum of the liquid sample; and

    replacing the measured value with a value obtained from a calibration equation which has been made in advance from a spectrum measured using the same method as above, thereby determining object characteristics of the liquid sample.

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