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US 5,488,854 AGranted
Pipetting apparatus
AssigneeAbbott Laboratories
InventorsJunichi Kawanabe, Masaaki Takeda, Hitomi Katagi, Yuko Kato, Brent A. Pelletier
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AssigneeAbbott Laboratories
InventorsJunichi Kawanabe, Masaaki Takeda, Hitomi Katagi, Yuko Kato, Brent A. Pelletier
Estimating the term…
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.
A pipetting apparatus having a nozzle for carrying out aspirating and dispensing of a sample, comprising:
A pipetting apparatus including a nozzle having a tip portion for aspirating and dispensing a sample, comprising:
A pipetting apparatus having a nozzle for aspirating and dispensing a sample, comprising:
Dependencies are inferred from the claim text.