Pipetting Apparatus

摘要

Pipetting apparatus has a block for holding pipette tips and connecting to pipette cones of a multiple-pipette head of a liquid handling apparatus. The block has cavities in an array and pipette tips inserted therein as well as conical plug-in openings for pipette cones of a multiple-pipette head. The block additionally has devices for connecting the block and the head. The block has receptacles with a shoulder and inserts for inserting into the receptacles, insert having a cavity, a cylindrical insertion opening with inserted pipette tip and a conical plug-in opening for sealing introduction of a pipette cone. Each insert has a support with which it rests on the shoulder of a corresponding receptacle when inserted into the block. Preferably each insert lies in the corresponding receptacle of the block with horizontal play on all sides.

主权项

1. A pipetting apparatus (1), comprising:
a) a block (2) for holding a plurality of identically configured pipette tips (3) having a tip axis (4) and for connecting these pipette tips (3) to a plurality of pipette cones (5) of a multiple-pipette head (6) of a liquid handling apparatus (7), wherein the block (2) comprises:
i) a plurality of cavities (8) penetrating the block (2) which are disposed parallel to one another;ii) a plurality of cylindrical insertion openings (10) disposed on an underside (9) of the block (2) and forming a lower opening of the cavities (8), which are configured in such a manner for the frictional receipt of respectively one pipette tip (3) that the tip axes (4) of all the inserted pipette tips (3) are disposed substantially parallel to one another; andiii) a plurality of conical plug-in openings (13) disposed on an upper side (12) of the block (2) and forming an upper opening of the cavities (8), of which each is configured for the sealing introduction of a pipette cone (5) of a multiple-pipette head (6); b) a number of tubular pipette tips (3) each having a wall (14) extending along the tip axis (4) and having a transport opening (15) disposed at a front end for receiving and dispensing liquid samples; and c) devices (20) for connecting block (2) and multiple-pipette head (6); wherein the pipetting apparatus (1) additionally comprises: d) a plurality of receptacles (16) extending concentrically to the tip axes (4), penetrating the block (2), each of which has a shoulder (17); and e) a plurality of inserts (18) extending concentrically to the tip axes (4) for insertion into the receptacles (16) of the block (2), wherein each insert (18) comprises a cavity (8), a cylindrical insertion opening (10) with inserted pipette tip (3) and a conical insertion opening (13) for the sealing introduction of a pipette cone (5) of a multiple-pipette head (6), wherein each insert (18) has a support (19) with which, when inserted into the block (2), it rests on the shoulder (17) of the corresponding receptacle (16).