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. (WO2018081446) POSITIVE DISPENSE VERIFICATION SENSOR

Pub. No.:    WO/2018/081446    International Application No.:    PCT/US2017/058567
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Fri Oct 27 01:59:59 CEST 2017
IPC: G01N 35/10
C12M 1/26
Applicants: BECTON DICKINSON AND COMPANY
Inventors: HANSEN, Timothy
ZHOU, Tong
Title: POSITIVE DISPENSE VERIFICATION SENSOR
Abstract:
Systems and methods for positive dispense verification are disclosed. In one embodiment, a system has a plurality of light emitters. The light from the emitters is directed toward a plurality of light detectors across a proximately horizontal plane. The liquid dispense device is positioned above the horizontal plane of light emission from the plurality of light emitters to the plurality of light detectors such that the dispensed liquid will travel through the horizontal plane defined by the emitted light and onto the container being inoculated. Each of the plurality of detectors is coupled to an amplifier. The amplifier generates a signal in response to an interrupt in the transmission of light from the light emitters to the light detectors when the light path is disrupted by the dispense of liquid confirming the liquid was dispensed onto the container.