An electronic, hand-held instrument intended to be used to withdraw, transfer, and inject specific volumes of fluid materials typically from one laboratory container to another, during an in vitro diagnostic procedure. It is typically in the form of a single-channel or multichannel liquid handling device used to deliver fluid materials into one receptacle or several receptacles simultaneously. It may be factory pre-set to deliver a specific volume or enable user-specified volumes within a useful range, visible on an electronic display.