| 摘要 |
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 ). |
