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Pipetting aids

An auxiliary equipment, technology for pipetting, applied in the field of hose valves

Active Publication Date: 2018-05-18
BRAND GMBH CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It has actually been shown that with the known pipetting aids for pipettes with a small internal cross-section, valve actuation cannot be performed very gently (feinfühlig)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] figure 1 A prior art pipetting aid is shown, the design of which is the here preferred embodiment of the pipetting aid. First of all, the pipetting aid has a housing 1 which has at one end a connector 2 for inserting and holding a pipette 3 which is only shown here with dashed lines. In the preferred embodiment shown, moreover, the connection 2 is an adapter which can be unscrewed from the housing 1 . But there are other implementations as well.

[0039] At the end of the housing 1 opposite to the joint 2 there is a suction bag 4 . The suction capsule is also exchangeable here, ie screwed to the housing 1 in the exemplary embodiment shown. The suction bag 4 is made of elastic body, can be squeezed manually, and generates negative pressure for sucking liquid when loosened. image 3 A functional realization of the emptying of the suction bag 4 by means of an insufflation valve 10 designed as a non-return valve is shown.

[0040] Figure 1~3 In combination, it is sho...

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PUM

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Abstract

The theme of the invention is a pipetting Auxiliary device with a housing (1) and a valve device (5) arranged between a joint (2) and a suction bag (4) in the housing. The valve device is provided with at least one control rod movably arranged in the housing (1). An operation tip (6) of the operation rod (7) extends outside of the housing (1). The valve device (5) is provided with two flexible pipe valves (11, 12). The operation rod (7) is provided with a retarding mechanism connected to the central portion oriented towards the flexible pipe valves (11, 12). Through the mode, operation and control are carried out on the flexible pipe valves (11, 12) in a condition that the retarding mechanism connected to the central portion, thus a slow and gentle opening process is allowed.

Description

technical field [0001] The invention relates to a pipetting aid or a hose valve, in particular for such a pipetting aid. Background technique [0002] In order to avoid injury to laboratory personnel when handling problematic, eg toxic or corrosive liquids, pipette guns are often used when using pipetting aids, i.e. in particular fat-belly pipettes and graduated pipettes Tubes (BRANDGMBH+CO KG "Information zur Volumenmessung" (volume measurement information), pp. 18-20, brochure 994651, 21 / 1010; 2012). Such pipettes are volumetric instruments, which generally have a pipette with a discharge tip below the pipette and a suction tip above the pipette with volume markings or graduations. In the case of the usual pipetting aids as provided by the applicant many years ago (cf. "Information zur Volumenmessung" (volume measurement information), cited above, "macro-Pipettierhelfer" (large-volume pipetting aid) p. 19), Insert the suction end into the connector of the pipetting aid h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01L3/02B01L99/00
CPCB01L3/0213B01L3/0293B01L2400/0481B01L2400/0616
Inventor M.E.赫夫林
Owner BRAND GMBH CO KG