| 摘要 |
<p>A pipetting arrangement comprising a carrier (10) to which first ends of a plurality of mutually parallel nozzles (20) are connected with the aid of respective screw joints (21, 22), wherein the nozzles are spaced only a slight distance apart, wherein second ends (24) of said nozzles (20) are designed to carry a readily replaced pipetting tip (30), and wherein the pipetting arrangement also includes means (7, 8, 17, 18, 12) for establishing at said second end of a respective nozzle (20) a selective pressure for sucking fluid into and dispensing fluid from said tips. The nozzles are provided at their respective second ends (24) with a driving formation (28, 28') to which there can be applied a turning tool for respectively tightening and loosening the screw joint (21, 22).</p> |
