An automatic analysis device has a plurality of types of photometers having different quantitative ranges, and an analysis control unit for quantifying the desired component in specimens based on measurement values of one or more photometers selected from among the plurality of types of photometers. The analysis control unit: sets a switching region in an overlap region of respective quantitative ranges of the plurality of types of photometers, said switching region having a greater width than does the variation in quantitative values of the desired component based on the measurement values of photometers having the same specimen; compares the quantitative value of a quantitative range portion that corresponds to the switching region and the quantitative values of the desired component based on the measurement values of the photometers; and selects a photometer to be used in quantitative output of the desired component from among the plurality of types of photometers.

An automatic analysis device has a plurality of types of photometers having different quantitative ranges, and an analysis control unit for quantifying the desired component in specimens based on measurement values of one or more photometers selected from among the plurality of types of photometers. The analysis control unit: sets a switching region in an overlap region of respective quantitative ranges of the plurality of types of photometers, said switching region having a greater width than does the variation in quantitative values of the desired component based on the measurement values of photometers having the same specimen; compares the quantitative value of a quantitative range portion that corresponds to the switching region and the quantitative values of the desired component based on the measurement values of the photometers; and selects a photometer to be used in quantitative output of the desired component from among the plurality of types of photometers.

When washing the inside of a reactor vessel which is used repeatedly, a rough suction is performed before suctioning with a washing tip; however, unwanted washing liquid may remain that may affect analysis results. The present invention provides an automatic analysis device for analyzing a sample using light, in which the automatic analysis device is characterized in that: a washing mechanism comprises a washing liquid supply nozzle that supplies washing liquid to a reactor vessel after analysis, a washing liquid suction nozzle that suctions the supplied washing liquid, a washing tip provided to the bottom end of the washing liquid suction nozzle, and a rough suction nozzle that suctions, in advance, a liquid within the reactor vessel before suctioning with the washing tip; and after the rough suction, liquid is caused to remain so that the bottom surface of the reactor vessel is not exposed.

Method and apparatus for thermal processing of nucleic acid in a thermal profile is provided. The method employs at least a first bath and a second bath, the method further employing a reactor holder for holding reactor(s) accommodating reaction material containing the nucleic acid. The method comprises maintaining bath mediums in the baths at two different temperatures; and alternately allowing the reactor(s) to be in the two baths in a plurality of thermal cycles to alternately attain a predetermined high target temperature THT, and a predetermined low target temperature TLT, wherein the bath medium in at least one of the baths is a high thermal conductivity powder.

A method and an apparatus for thermal processing of nucleic acid in a thermal profile. The method employs at least a first bath and a second bath, the method further employing a reactor holder for holding reactor(s) accommodating reaction material containing the nucleic acid. The method includes maintaining bath mediums in the baths at two different temperatures; and alternately allowing the reactor(s) to be in the two baths in a plurality of thermal cycles to alternately attain a predetermined high target temperature T.sub.HT, and a predetermined low target temperature T.sub.LT, wherein the bath medium in at least one of the baths is a high thermal conductivity powder.

An automatic analysis apparatus is capable of replacing circulated water in a reaction vessel and continuously cooling a light source lamp without stopping an operation for measuring a specimen. In an operation state, a drain electromagnetic valve 49 is opened to drain reaction vessel water outside and when the water level reaches a measurement limit water level, the drain electromagnetic valve 49 is closed. The reaction vessel water is supplied by starting a water supply pump, opening a water supply electromagnetic valve and when the water level has reached a full water level, the water supply electromagnetic valve is closed, and the water supply pump is stopped. In a state other than the operation state, the reaction vessel water is drained outside. When the water level has reached a circulation limit water level, the drain electromagnetic valve is closed.

According to one embodiment, an automatic analyzing apparatus includes processing circuitry. The processing circuitry measures an electrical potential pertaining to a contact between a probe for dispensing a sample or a reagent and a liquid surface, and outputs the measured electrical potential as a measurement value, determines whether or not the measurement value is within a specific range, and outputs a determination result, and provides a notification on a state of a liquid related to the liquid surface according to the determination result.

An automatic analysis device has a plurality of types of photometers having different quantitative ranges, and an analysis control unit for quantifying the desired component in specimens based on measurement values of one or more photometers selected from among the plurality of types of photometers. The analysis control unit: sets a switching region in an overlap region of respective quantitative ranges of the plurality of types of photometers, said switching region having a greater width than does the variation in quantitative values of the desired component based on the measurement values of photometers having the same specimen; compares the quantitative value of a quantitative range portion that corresponds to the switching region and the quantitative values of the desired component based on the measurement values of the photometers; and selects a photometer to be used in quantitative output of the desired component from among the plurality of types of photometers.

When washing the inside of a reactor vessel which is used repeatedly, a rough suction is performed before suctioning with a washing tip; however, unwanted washing liquid may remain that may affect analysis results. The present invention provides an automatic analysis device for analyzing a sample using light, in which the automatic analysis device is characterized in that: a washing mechanism comprises a washing liquid supply nozzle that supplies washing liquid to a reactor vessel after analysis, a washing liquid suction nozzle that suctions the supplied washing liquid, a washing tip provided to the bottom end of the washing liquid suction nozzle, and a rough suction nozzle that suctions, in advance, a liquid within the reactor vessel before suctioning with the washing tip; and after the rough suction, liquid is caused to remain so that the bottom surface of the reactor vessel is not exposed.

An automatic analysis device has a plurality of types of photometers having different quantitative ranges, and an analysis control unit for quantifying the desired component in specimens based on measurement values of one or more photometers selected from among the plurality of types of photometers. The analysis control unit: sets a switching region in an overlap region of respective quantitative ranges of the plurality of types of photometers, said switching region having a greater width than does the variation in quantitative values of the desired component based on the measurement values of photometers having the same specimen; compares the quantitative value of a quantitative range portion that corresponds to the switching region and the quantitative values of the desired component based on the measurement values of the photometers; and selects a photometer to be used in quantitative output of the desired component from among the plurality of types of photometers.