Automatic analyzing apparatus

Claim 1

An automatic analyzing apparatus comprising means for transferring a reaction vessel along a given traveling path in a stepwise manner pitch by pitch; means arranged on the traveling path at a reagent distribution position for distributing a reagent corresponding to a measurement item to be tested into the reaction vessel transferred into the reagent distribution position; means arranged on the traveling path at a sample distribution position which is downstream with respect to said reagent distribution position, said sample being distributed into the reaction vessel to form a reaction liquid; a first photometric unit arranged on the traveling path at a position between the reagent distribution position and the sample distribution position for measuring an absorption degree of the reaction vessel and the reagent contained in the reaction vessel; a second photometric unit arranged on the traveling path at a downstream position with respect to said sample distribution position for measuring an absorption degree of the reaction liquid through the reaction vessel; means for correcting the absorption degree of the reaction liquid on the basis of the absorption degree of the reaction vessel and the reagent to derive a corrected absorption degree of the reaction liquid alone; means arranged on the traveling path at an upstream position with respect to said reagent distribution position for supplying new reaction vessels onto the reaction vessel transferring means; and means arranged on the traveling path at a downstream position with respect to the second photometric unit for removing the reaction vessels containing the reaction liquids from the traveling path.