Abstract: The analysis apparatus includes a standby section which is provided between a dispensing operation of an analysis item B? prior to an analysis item C and the sample analysis channel introduction. The sample analysis channel introduction is arranged prior to a data collection section of an analysis item A. The operation is started earlier but after a sample dispensing operation section of the analysis item A. A sample dispensing operation section of the analysis item C can be started earlier and the analysis time of the analysis item C can be moved to immediately after a sample analysis operation section of the analysis item B?. The analysis item A in a second cycle can be started earlier by the early start time of the analysis item C in a first cycle. A total processing time Tc can be shorter than a total processing time Tb.

Abstract: [Problem] To provide a control method of avoiding drop of a throughput by solvent substitution and of avoiding increase of a solvent consumption amount in a control method for an automatic analyzer including a liquid chromatograph that includes plural analysis flow passages arranged to be parallel to each other. [Solution] Which one of plural analysis flow passages 105 to 107 is to be used is determined in introducing plural separation processes using solvents whose kind is different from each other with a time lag relative to one another, and a solvent used in a next separation process executed at timing after starting the plural separation processes determined to be introduced with a time lag relative to one another and each of the solvents used in the plural separation processes determined to be introduced with a time lag relative to one another are compared.

Abstract: A column connection method of a liquid chromatograph and a liquid chromatograph capable of keeping a mistakenly installed column by an operator as an unused column are provided. The column connection method of the liquid chromatograph includes: a first step of installing a column at a column installation part and obtaining a first reading result by reading identification information of the column before connecting the column with an analysis flow path; and a second step of connecting the column with the analysis flow path and obtaining a second reading result by reading identification information of the column, in which the first reading result is compared with the second reading result to judge identity of the column.

Abstract: A method of controlling an automatic analyzer includes searching for a substitute stream that can be substituted, in a case where an abnormality of a stream is detected for a liquid chromatograph having multiple streams, after setting an analysis schedule; and modifying the analysis schedule, if a substitute stream exists, so that a sample scheduled to be introduced into the stream which has the abnormality is introduced into the substitute stream, and treatment timings of the sample which has passed through the substitute stream and the sample which has passed through another normal stream in the detector do not overlap with each other, in which the automatic analyzer includes a pretreatment unit that purifies a sample; a separation unit; and a detector that detects a separated sample, and a treatment timing of the sample in the separation unit and the detector is controlled based on the analysis schedule.

Abstract: In an automatic analyzer where a plurality of types of separation column are selectively used for performing a chromatographic analysis, an automatic analyzer configured to install a separation column of an intended type at an aimed position, and a method for installing the separation column in the automatic analyzer are provided. Identification mechanisms, a computer, and a display unit are included. The identification mechanisms read identifiers included in separation columns when the separation columns are installed at installation positions. The computer determines whether identification information of the identifiers read by the identification mechanisms matches an installation pattern registered in advance or not. The display unit notifies an alarm when the identification information is determined not to match the installation pattern by the computer.

Abstract: An analysis device having a liquid chromatograph prevents a plurality of streams from being unusable at the same time Whether a usable stream is 0 or not among streams 1, 2, and 3 is determined. In a case where none of the streams is usable, the control unit skips a sample introduction in the cycle; and where there is one usable stream in the cycle, the stream is used. In a case where there are multiple streams that are usable in the cycle, and there are multiple streams of which the remaining number of uses of a separation column is the minimum, the stream having the smallest stream number is used; and where there is one stream of which the remaining number of uses of a separation column is the minimum, the stream to which the separation column having the minimum remaining number of uses is connected and used.

Abstract: An analysis apparatus having a plurality of chromatographs is provided capable of achieving suppression of a reduction in throughput even when a separation column needs to be replaced at the end of its lifespan. When estimating that a column used in a liquid chromatograph 107 reaches the end of its lifespan, a control unit calculates back time from the estimated time so that another liquid chromatograph 117 is ready for measurement at a timing when the liquid chromatograph 107 becomes unusable for the measurement. Then, the control unit starts the preparation operation of the liquid chromatograph 117. After the completion of the preparation operation, the liquid chromatograph 117 performs initialization, equilibration, standard sample injection, elution, and washing processes of a preliminary new column.

Abstract: In conventional automatic analyzers, there have been instances where, when a plurality of associated items are analyzed as a set item, there is high variation in the analysis data obtained using the set item, leading to a need for improvement of analysis precision. The present invention comprises performing, in mutual association, a set of preparation steps to carry out until it is time to analyze an unknown sample, the set of preparation steps including a pre-preparation step in which stirring, etc., is performed when an analysis reagent kit is mounted on the analyzer, and a step for correcting a standard curve in which correction samples that correspond to analysis items are used. This makes it possible to perform analysis after the preparation states of a plurality of analysis reagent kits are collected as needed, enabling high-precision analysis of a set item.

Abstract: An analysis device having a liquid chromatograph prevents a plurality of streams from being unusable at the same time Whether a usable stream is 0 or not among streams 1, 2, and 3 is determined. In a case where none of the streams is usable, the control unit skips a sample introduction in the cycle; and where there is one usable stream in the cycle, the stream is used. In a case where there are multiple streams that are usable in the cycle, and there are multiple streams of which the remaining number of uses of a separation column is the minimum, the stream having the smallest stream number is used; and where there is one stream of which the remaining number of uses of a separation column is the minimum, the stream to which the separation column having the minimum remaining number of uses is connected and used.

Abstract: The analysis apparatus includes a standby section which is provided between a dispensing operation of an analysis item B? prior to an analysis item C and the sample analysis channel introduction. The sample analysis channel introduction is arranged prior to a data collection section of an analysis item A. The operation is started earlier but after a sample dispensing operation section of the analysis item A. A sample dispensing operation section of the analysis item C can be started earlier and the analysis time of the analysis item C can be moved to immediately after a sample analysis operation section of the analysis item B?. The analysis item A in a second cycle can be started earlier by the early start time of the analysis item C in a first cycle. A total processing time Tc can be shorter than a total processing time Tb.

Abstract: In conventional automatic analyzers, there have been instances where, when a plurality of associated items are analyzed as a set item, there is high variation in the analysis data obtained using the set item, leading to a need for improvement of analysis precision. The present invention comprises performing, in mutual association, a set of preparation steps to carry out until it is time to analyze an unknown sample, the set of preparation steps including a pre-preparation step in which stirring, etc., is performed when an analysis reagent kit is mounted on the analyzer, and a step for correcting a standard curve in which correction samples that correspond to analysis items are used. This makes it possible to perform analysis after the preparation states of a plurality of analysis reagent kits are collected as needed, enabling high-precision analysis of a set item.