Patent ID: 7396512
Filing Date: 2008-07-08
Classification: B01L,G01F,Y10T

Abstract:
1. An electronic, hand held fluid dispensing system for use with a laboratory pipette, comprising: a housing capable of being held in one hand; a coupler disposed at least partially within said housing, said coupler being adapted to be removably connected to said pipette; a source of pressure and/or vacuum; a valve pneumatically coupled between said source and said coupler; at least one pressure transducer pneumatically coupled to said coupler, said pressure transducer generating at least one output; and an electronic controller electrically coupled to control at least said valve and also electrically coupled to said pressure transducer, said electronic controller operating in an open-loop mode to control said valve in accordance with a valve control timing parameter derived from said pressure transducer output and a stored quantity parameter relating to a desired quantity of fluid to be dispensed, said valve control timing parameter controlling said valve so that said system automatically, repetitively dispenses substantially a predetermined quantity of fluid from said pipette.