Patent ID: 7748281
Filing Date: 2010-07-06
Classification: G01N

Abstract:
1. A dispensing apparatus comprising: a syringe which has a piston, the syringe adapted to suck and discharge a liquid; a storage unit which stores therein a reference driving profile indicating a reference for a driving position of the piston and a driving time of the piston; a position detector which detects an actual driving position of the piston; a timer which measures an actual driving time of the piston; a driving controller which controls driving of the piston based on the reference driving profile, the driving controller creating an actual driving profile based on the actual driving position and the actual driving time of the piston, and the driving controller comparing the reference driving profile with the actual driving profile to determine based on a result of the comparing whether the actual dispensing is proper or not; wherein the comparison of the reference driving profile to the actual driving profile indicates a variation of a property of the dispensing apparatus regarding a dispensing accuracy, and the variation of a property of the dispensing apparatus indicates a variation of performance including a positioning accuracy and a velocity control accuracy of the piston; and a display which displays a message, the message indicating whether actual dispensing is proper or improper.