AUTOMATIC ANALYZER AND METHOD FOR ADJUSTING CLEANING LIQUID AMOUNT

• Main Authors: OCHI MANABU, SAKATA KENSHIRO, TAKAHASHI TAKUYA, ETO JUN, SUZUKI YOICHIRO, KAWAHARA TETSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 22.02.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

To provide an automatic analyzer and an adjustment method with which it is possible to adjust a cleaning liquid amount accurately in a short time.SOLUTION: Provided is an automatic analyzer that, when cleaning a dispensing probe, discharges a cleaning liquid in a reference liquid amount from a cleaning nozzle while a tip of the dispensing probe is assumed to be at a cleaning position. When a position at which liquid contact is detected in a case where the cleaning liquid in the reference liquid amount is discharged when a horizontal distance from the cleaning nozzle is farther than the cleaning position and lower than the cleaning position and the tip of the dispensing probe is at the position, is assumed to be a first adjustment position, a control unit causes, when adjusting the cleaning liquid amount, the cleaning liquid to be discharged while the tip of the dispensing probe is at the first adjustment position, and after confirming whether or not liquid contact is detected, causes the cleaning liquid to be discharged while the tip of the dispensing probe is downward or upward of the first adjustment position. Then, after confirming whether or not liquid contact is detected, the control unit determines the setting of liquid amount adjustment means needed for adjusting the cleaning liquid amount to the reference liquid amount on the basis of these confirmation results.SELECTED DRAWING: Figure 3 【課題】正確かつ短時間に洗浄液量を調整できる自動分析装置および調整方法を提供する。【解決手段】分注プローブの洗浄時に、前記分注プローブの先端を洗浄位置とした状態で、基準液量の洗浄液を洗浄ノズルから吐出する自動分析装置であって、前記洗浄ノズルからの水平距離が前記洗浄位置よりも遠く、かつ、前記洗浄位置よりも低く、当該位置に前記分注プローブの先端があるときに前記基準液量の洗浄液が吐出された場合に接液が検知される位置を第１調整位置とした場合、洗浄液量の調整時に、制御部は、前記分注プローブの先端を前記第１調整位置とした状態で洗浄液を吐出させ、接液を検知したか否かを確認した後、前記分注プローブの先端を前記第１調整位置よりも上方または下流の位置とした状態で洗浄液を吐出させ、接液を検知したか否かを確認し、これらの確認結果に基づいて、洗浄液量を前記基準液量にするために必要な液量調整手段の設定を決定する。【選択図】 図３