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...Userguide no liquid handling calibration and adjustment of dispensing systems in the laboratory kornelia ewald eppendorf ag hamburg germany abstract pipettes dispensers means that under specified ambient conditions a defined volume dispensed nominal or selected water from system should have certain expected weight to be more precise this does not involves determining correlation between require intervention which modifies on permanent basis introduction test norm most commonly used for their is standard din en iso lays down maximum permissible dispens systematic measurement deviation also known as inaccuracy random deviations ers measure extent mean systematische und zufallige messabweichung various error limits value results set slight unrichtigkeit unprazision always refer overall seen when there only consisting device accessories such measured fig pipette tip compliance with regard must checked by user control richtig aber unprazise imprecise ing compli inspection measuring equipmen...