Patent ID: 9575082
Date: 2017-02-21
CPC Classifications: G01N

Claim:
1. An automatic analysis device comprising: a scattered light measuring unit that measures an amount of scattered light obtained from light irradiation of a reaction cell; a transmitted light measuring unit that measures an amount of transmitted light obtained from the light irradiation of reaction cell; a data storage unit that stores data of the measured amounts of scattered light and transmitted light; and an analysis unit that programmed to compute, based on the measured amounts of scattered light and transmitted light, a concentration of a substance to be measured included in a sample in the reaction cell with respect to an examination item, wherein the scattered light measuring unit and the transmitted light measuring unit perform: a first light amount measurement of the scattered light and the transmitted light with water dispensed in the reaction cell before the sample is dispensed therein, a second light amount measurement of the scattered light and the transmitted light after the sample and a preprocessing reagent are dispensed into the reaction cell, a third light amount measurement of the scattered light and the transmitted light after a reaction reagent is dispensed into the reaction cell and before the reaction reagent and the substance to be measured react with each other, and a fourth light amount measurement of the scattered light and the transmitted light after the reaction reagent and the substance to be measured have reacted, and wherein the analysis unit is further programmed to correct, based on the measured amounts at the first and the second light amount measurements and a liquid amounts in the reaction cell at each of the second and the third light amount measurements, the measured amount of scattered light at the third light amount measurement and the measured amount of scattered light at fourth light amount measurement, and is further programmed to compute the concentration based on the corrected amounts of the scattered light at the third and the fourth light amount measurements.