Patent ID: 11938474
Assignee: HAMILTON BONADUZ AG
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 1:
2. The pipetting device according to claim 1,
wherein the control device is at least one of:
configured to determine, in accordance with a starting quantity value which represents a starting quantity of dosing liquid in the pipetting channel before the beginning of the dispensing sequence, and a target dispensed quantity value which represents the target total quantity of dosing liquid to be dispensed during the dispensing sequence, a target residual quantity value which represents a target residual quantity of dosing liquid remaining in the pipetting channel at the end of the dispensing sequence; and
configured to:
determine, on the basis of a residual quantity working gas pressure-data correlation recorded in the data memory for the specified dosing liquid, a working gas pressure associated to the represented target residual quantity, and
actuate the piston drive to adjust the determined working gas pressure in the pipetting channel, and
after adjustment of the determined working gas pressure in the pipetting channel, to acquire the piston position of the pipetting piston, and
compare the acquired piston position with a target piston position associated to at least one of the represented target residual quantity and the determined working gas pressure, and
depending on the quality of the comparison result representing the dispensing sequence, to produce an output representing the determined quality.