An aspirate-dispense apparatus and associated methods

Abstract

A controller configured to control one or more of aspiration and dispensing of a primary fluid by an aspirate-dispense apparatus, the aspirate-dispense apparatus comprising a secondary fluid in working communication with the primary fluid, wherein the controller is configured to: receive measurement signalling for a monitored flow parameter of the secondary fluid; determine, using calibration data, a volume of aspirated or dispensed primary fluid based on the received measurement signalling, the calibration data defining a relationship between the volume of aspirated or dispensed primary fluid and the monitored flow parameter of the secondary fluid; and control the flow of primary or secondary fluid based on the determined volume to aspirate or dispense a specific volume of primary fluid.