公开(公告)号：US20230390716A1

公开(公告)日：2023-12-07

申请号：US18033587

申请日：2021-09-01

Applicant: Hitachi High-Tech Corporation

Inventor： Mitsuhiro MATSUZAWA ,  Mariko MIYAZAKI ,  Yuichi IWASE ,  Takushi MIYAKAWA ,  Masafumi MIYAKE ,  Haruyoshi YAMAMOTO

IPC: B01F23/40 ,  B01F23/451 ,  B01F25/10

CPC classification number: B01F23/405 ,  B01F23/451 ,  B01F25/101

Abstract: Provided is a technique for efficiently mixing a plurality of liquids by using only a single liquid feeding device. This liquid mixer comprises: a first inflow flow path into which a first liquid flows; a second inflow flow path into which a second liquid flows; a liquid merging part where the first liquid and the second liquid merge; an outflow flow path which is connected to the liquid merging part and through which the first liquid and the second liquid flow out; and a single liquid feeding device. The liquid merging part has a first flow path connected to the first inflow flow path, and a second flow path connected to the second inflow flow path, the first flow path branches into at least two flow paths, and the second flow path branches into at least two flow paths. One among the flow paths branched from the first flow path and one among the flow paths branched from the second flow path are connected and merged with each other. Another one of the flow paths branched from the first flow path and another one among the flow paths branched from the second flow path are connected and merged with each other on the downstream side, and are connected to the outflow flow path.

公开(公告)号：US20230032886A1

公开(公告)日：2023-02-02

申请号：US17792453

申请日：2020-12-03

Applicant: HITACHI HIGH-TECH CORPORATION

Inventor： Takahiro KUMAGAI ,  Takushi MIYAKAWA ,  Yuichi IWASE ,  Haruyoshi YAMAMOTO ,  Tetsuji KAWAHARA

IPC: G01N27/333

Abstract: An electrolyte analysis apparatus measures the concentration of a specific ion in a specimen based on the result of measuring a reagent having a predetermined ion concentration by an ion selective electrode and the result of measuring the specimen by the ion selective electrode. The electrolyte analysis apparatus includes a reagent unit for diluting and restoring a concentrated internal standard solution having a concentration higher than a predetermined ion concentration with pure water to generate a reagent having the predetermined ion concentration, and a mechanism, in which the reagent generation unit generates the reagent such that the absolute value of the temperature difference between the reagent obtained by the dilution and restoration, and the pure water is smaller than the absolute value of the temperature difference between the reagent obtained by the dilution and restoration, and the reagent stock solution.

公开(公告)号：US20230288439A1

公开(公告)日：2023-09-14

申请号：US18015971

申请日：2021-03-11

Applicant: HITACHI HIGH-TECH CORPORATION

Inventor： Takushi MIYAKAWA ,  Ryota WATANABE ,  Yuichi IWASE ,  Takahiro KUMAGAI ,  Masafumi MIYAKE

IPC: G01N35/00 ,  G01N35/04

CPC classification number: G01N35/00732 ,  G01N35/04 ,  G01N2035/0462 ,  G01N2035/00891

Abstract: There is provided an electrolyte analyzer that can appropriately replace consumable items while more exerting analysis processing performances than a conventional electrolyte analyzer does. An electrolyte analyzer includes a plurality of analysis chambers 50 having ISE electrodes 1 configured to measure the concentration of the electrolyte of a sample and a controller 29 configured to control operations in the electrolyte analyzer 100 including the analysis chambers 50. The ISE electrodes 1 of the plurality of analysis chambers 50 analyze the same analysis items. The controller 29 selects an analysis chamber 50 used for measurement from the plurality of analysis chambers 50 corresponding to the remaining measurable numbers of a plurality of ISE electrodes 1 and measurement request status.

公开(公告)号：US20220034918A1

公开(公告)日：2022-02-03

申请号：US17276941

申请日：2019-10-18

Applicant: Hitachi High-Tech Corporation

Inventor： Yuichi IWASE ,  Kohei NONAKA ,  Tetsuji KAWAHARA

IPC: G01N35/00 ,  G01N35/10

Abstract: The fluid temperature within piping of a sample dispensing system is stabilized in order to maintain stable dispensing performance with high precision in an automatic analyzer. A controller executes a first operation sequence to operate the sample dispensing system in a standby state continued until the sample is transported to the sample dispensing position, and executes a second operation sequence to operate the sample dispensing system in an analysis state in which the sample located in the sample dispensing position is dispensed. A time period during interior cleaning performed on the sample probe in a single cycle of the first operation sequence is set to be shorter than a time period during interior cleaning performed on the sample probe in a single cycle of the second operation sequence. Alternatively, the first operation sequence is configured to perform interior cleaning at a rate of once every multiple of cycles.