| 摘要 |
A dispensing apparatus (1) which performs dispensing by filling a duct (2) to which a dispensing nozzle (3) is connected with a liquid (11), making the liquid move in the duct to absorb a liquid sample including a specimen or a reagent through the dispensing nozzle, and discharging the absorbed liquid sample; and an in-duct bubble presence determining method in the dispensing apparatus. The presence determining method includes processes of: discharging the liquid (11) in the duct (2) from the dispensing nozzle (3) and detecting a transition of a pressure in the duct; calculating the number of mountain pulses in a pressure transition waveform based on the detected pressure transition; and determining a presence of a bubble in the duct based on the calculated number of mountain pulses. |
