Pipetting apparatus

Details Pipetting apparatus Pipetting apparatus

G - Physics

01

F

G01F 23/14 (2006.01) B01L 3/02 (2006.01) G01N 35/10 (2006.01)

Patent

CA 2131283

The presence of air bubbles is detected during a dispensing of samples for determining if the volume of the sample dispensed is insufficient. The characteristic of a presence-of-bubbles curve (101) has a difference in a pressure inside a nozzle from the characteristic of a curve (100) under a normal condition in which no bubbles exist, at the time just before the dispensing of the sample is completed. Accordingly, it is possible to determine whether or not bubbles exist by detecting the pressure inside the nozzle at the determination time (105) and comparing the detected value with an established threshold value, and it is determined that an insufficient volume of sample has been dispensed, thereby a warning is generated. 11

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