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Pipetting device and method

A pipetting device and liquid pipetting technology, applied in chemical instruments and methods, measuring tubes/pipettes, laboratory utensils, etc., can solve problems such as reducing the sensitivity of pipette tips

Pending Publication Date: 2021-06-22
帝肯贸易股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in reduced sensitivity to changes in pipette tips, such as changes in the precise diameter of the pipette tip orifice

Method used

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  • Pipetting device and method
  • Pipetting device and method

Examples

Experimental program
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Effect test

Embodiment Construction

[0070] Fig. 1 shows schematically and simplified a pipetting device 10 according to the invention. In order to illustrate its function, this view shows, in addition to the pipetting device itself, other further elements in a specific pipetting situation. The pipetting device shown has a pipette 21 attached to the connection opening 14 of the pipette connector 13 . The pipette shown in this view contains a liquid which is now under the pressure of the gaseous working volume which enters the pipette 21 through the connection opening 14 . A drop of liquid is pushed out of the opening of the pipette opposite the opening of the pipette connected to the connection opening of the pipetting device. The previously generated liquid volume 22 is located in one of the wells 23 of the well plate arranged below the pipette tip.

[0071] The gaseous working medium is pressurized by the pressure source 11 . A gas flow connection through which a gaseous working medium can flow from the pres...

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PUM

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Abstract

The invention relates to a pipetting device and method. The pipetting device 10 for pipetting a liquid is driven by a gaseous working medium. The pipetting device comprises: at least one pipette connector 13 adapted to attach a pipette 21 at a connection opening 14, at least one pressurizing and / or suctioning pressure source 11, 11', 11'', a gas flow connection 12 between said connection opening and said at least one pressure source, a flow restriction 15 defining at least a section of said gas flow connection, a first sensor 16 configured to measure a quantity indicative of the temperature of the flow restriction. The invention is further directed to a gas flow connection element for a pipetting device and to a method of pipetting a liquid volume.

Description

technical field [0001] The present invention relates to a pipetting device, more particularly the present invention relates to a pipetting device for pipetting a liquid driven by a gaseous working medium. In other aspects, the invention relates to a gas flow connection element for a pipetting device and a method of pipetting a liquid volume. Background technique [0002] In the field of liquid handling, pipettes are commonly used to aspirate and dispense liquids. Such liquids may eg be chemical products or bodily fluid samples. One type of pipetting device is the so called air displacement pipette. When using this type of pipette, a defined volume of a gaseous working medium (usually air) is filled into or removed from the pipette. Thereby, the pressure on one side of the liquid in the pipette or near the opening of the pipette is reduced or increased relative to the reference pressure, so that a force is generated which drives the liquid out of the pipette or into pipet...

Claims

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Application Information

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IPC IPC(8): B01L3/02
CPCB01L3/0217B01L3/0293B01L2300/1827B01L2200/147B01L2400/086B01L2400/0487B01L2400/0622B01L3/021B01L2200/148B01L2300/14B01L2300/1888B01L2400/06
Inventor M·凯勒T·盖格斯
Owner 帝肯贸易股份公司
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