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公开(公告)号：DE2607583A1
公开(公告)日：1976-09-09
申请号：DE2607583
申请日：1976-02-25
Applicant: MEDICAL LABORATORY AUTOMATION
Inventor： KEEGAN WILLIAM P BELLE HARBOR
Abstract: A mechanical pipette having a fixed stroke for aspirating and discharging a predetermined volume of liquid into and from a reservoir. A measuring piston controls the volume of liquid drawn into the reservoir and a substantially larger piston assures that all of the liquid in the reservoir is expelled therefrom on a discharge stroke. On the discharge stroke, a mechanically actuated valve is opened to admit air being compressed by the substantially larger piston into the reservoir.
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