초록

An improved liquid handling system for controllably dispensing, aspirating and intermixing various liquids through the use of a precision liquid metering and aspirating device having a fixed base and a rotatable fluid containing cartridge.

대표청구항 ▼

A liquid handling apparatus comprising: (a) at least one first liquid reservoir; (b) a liquid metering and aspirating device comprising: (i) a threaded hollow base member having a bottom closure wall; (ii) a rigid stator non-rotatably mounted within said base member; (iii) a threaded liquid containe

A liquid handling apparatus comprising: (a) at least one first liquid reservoir; (b) a liquid metering and aspirating device comprising: (i) a threaded hollow base member having a bottom closure wall; (ii) a rigid stator non-rotatably mounted within said base member; (iii) a threaded liquid container adapted to be threadably interconnected with said base member upon rotation of said container relative to said base member, said container having an inner wall and a top closure wall; (iv) liquid delivery means for conducting fluid from the interior of said liquid container to the exterior of the device; and (v) a non-rotatable plunger reciprocally movable a precise axial distance within said liquid container only upon rotation of said container relative to said base member, said plunger having: (1) sealing means adapted to sealably engage said inner wall of said liquid container for preventing leakage of fluid between said plunger and said inner wall upon non-rotatable axial movement of said plunger within said liquid container; and (2) connecting means for operably interconnecting said plunger with said stator for preventing rotation of said plunger relative to said stator; (c) first transfer means operably associated with said liquid delivery means of said liquid metering and aspirating device and said first liquid reservoir for transferring liquid between said liquid delivery means and said first liquid reservoir.