METHOD AND SYSTEM FOR ACCURATE MEASUREMENT OF LIQUID IN PIPETTE FOR LIQUID SAMPLING Russian patent published in 2009 - IPC B01L3/02 

FIELD: technological processes.

SUBSTANCE: group of inventions is related to sampling and delivery of controlled liquid volumes. Method for control of required liquid volume in pipette designed for operation with liquid, by means of correction depending on current physical parametre of pipette, includes selection of required volume in pipette containing drive mechanism of piston arranged with the possibility of contact with piston unit to provide for displacement of piston stem of mentioned unit in cap holder to therefore provide for control of liquid amount in cap holder, at that required volume represents amount of controlled liquid; calculation of correction volume with application of volume characteristic that characterises difference of liquid amount controlled in cap holder as function of required volume, at that volume characteristic is defined with application of calibration process; and display of correction volume for pipette user. It is also presented a device for control of required volume of liquid in pipette by means of correction depending on current physical parametre in pipette.

EFFECT: accurate control of required liquid volume is achieved in pipette, as well as pipette manufacture simplification.

26 cl, 16 dwg