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Measuring apparatus

  • US 5,316,727 A
  • Filed: 08/28/1992
  • Issued: 05/31/1994
  • Est. Priority Date: 09/08/1989
  • Status: Expired due to Fees
First Claim
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1. A system which measures the constituent concentration of a specimen, comprising:

  • a test piece having a test material which develops coloring as a result of a reaction with the constituents of said specimen, said test piece also including a first opening on one side thereof and a second opening on the other side thereof at a location corresponding to said first opening, said first opening provided for applying a specimen to said test material;

    a measuring apparatus for receiving the test piece, said measuring apparatus including;

    test piece detection means for detecting that said test piece has been loaded into a main body of the apparatus;

    irradiation means for irradiating said test piece with light when the loading of said test piece is detected by said test piece detection means;

    judgment means for detecting whether or not an intensity of light reflected from said test piece is within a predetermined range and for judging whether or not the reflected light is reflected through said second opening;

    notifying means for notifying that a measurement using said test piece is impossible when said judgment means judges that the reflected light is not reflected through said second opening;

    detection means for detecting the intensity of light emitted by said irradiation means and reflected through said second opening; and

    measurement means for determining the constituent concentration of said specimen on the basis of the intensity of the reflected light detected by said detection means.

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