Apparatus and method for optically analyzing a plurality of analysis items in a sample in a container

  • US 4,668,617 A
  • Filed: 01/27/1984
  • Issued: 05/26/1987
  • Est. Priority Date: 05/30/1980
  • Status: Expired due to Term
First Claim
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1. An apparatus for optically analyzing at least two analytical items, which comprises:

  • a reactor turntable provided with a plurality of reactor vessels on a circumferential edge thereof;

    a first dispenser for charging a first enzyme reagent into the reactor vessels at a first position over the circumferential edge of said turntable;

    a second dispenser for charging a second enzyme reagent into the reactor vessels at a second position over the circumferential edge of said turntable;

    a spectroscope for light absorption measurement of a sample solution in the reactor vessels by detecting a light beam passing through the reactor vessels at a third position on the circumferential edge of said turntable;

    a sample-feeding means for feeding a sample to the reactor vessels at a fourth position on the circumferential edge of said turntable; and

    control means for providing analysis of at least two analytical items in the sample solution in a given reactor vessel of said reactor vessels, said control means including means for alternately actuating the first dispenser, the second dispenser, and the sample feeding means so as to feed first enzyme reagent, second enzyme reagent, and sample, respectively, to the given reactor vessel while the reactor turntable is at rest and for turning the reactor turntable by a one pitch difference with respect to the given reactor vessel and actuating the spectroscope during the turning;

    said control means further including (1) means for analyzing a first analytical item in the sample solution in the given reactor vessel on the basis of an output of light absorption measurement of the sample solution by the spectroscope after the addition of the first enzyme reagent from the first dispenser to the sample solution, and (2) means for analyzing a second analytical item in the sample solution in the given reactor vessel after the addition to the given reactor vessel of the second enzyme reagent from the second dispenser, said means for analyzing a second analytical item conducting said analysis of the second analytical item from a difference between (a) said output of light absorption measurement and (b) another output of light absorption measurement of the sample solution in the given reactor vessel by the spectroscope after the addition to the given reactor vessel of the second enzyme reagent.

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