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Method and system for metering and applying a reagent liquid

A technology of measuring device and test solution, applied in chemical instruments and methods, laboratory containers, instruments, etc., can solve the problem of impossible to ensure the same components and so on

Inactive Publication Date: 2009-01-28
KBA METRONIC AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such liquid mixtures often exhibit the property that segregation or deposition occurs, so that it is not possible to ensure the same composition of the droplets applied to the individual samples, especially in the case of such mixtures with a long residence time in the metering device.

Method used

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  • Method and system for metering and applying a reagent liquid
  • Method and system for metering and applying a reagent liquid
  • Method and system for metering and applying a reagent liquid

Examples

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Embodiment Construction

[0045] figure 1 A first embodiment of the invention of a continuously operating metering device is shown. According to the invention, the basic device 1 detached from the dosing head 2 comprises only an electrical control unit 1a, which is connected to the dosing head 2 via a line 1b. According to the invention, all other components necessary for operation are located in the metering head 2 .

[0046] The test solution 30a is placed in a replaceable storage container 30b, which together with a non-illustrated fixing device forms an at least logical first structural component 30 . By means of a pump 35a, the test solution 30a is pumped out of the storage container 30b via a connecting line 4a via a first filter element 31a and through a connecting line 4b, the pressure equalization element 31c, the pressure sensor 32 and the open The valve 33 reaches the nozzle chamber 5 through the inlet 5a. The pump 35a, the pressure equalization element 31c and the pressure sensor 32 form...

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Abstract

The invention relates to a method and a device for measuring a test solution by a measuring head and applying to one surface. In a measuring head (2) comprising all liquid feeding components, the test solution (30a) is pumped continuously in a return passage and the test solution is pumped to a nozzle chamber (5) from a storage container (30b) in the return passage, wherein, the nozzle chamber comprises at least one nozzle (6), and the nozzle generates pressure oscillation by means of a modulation element (7) in the nozzle chamber (5), such that the test solution as a modulated continuous jet current (9) is discharged from the nozzle (6), split into single liquid drop (11) and therefore used as the single liquid drop (11) to get over the distance between the measuring head (2) and the surface to be applied to the surface.

Description

technical field [0001] The invention relates to a method and a device for metering and applying a test solution from a metering head to a surface. Background technique [0002] Metering devices or dosing heads for metering liquids have been used for many years in medical or pharmaceutical applications and also in industrial applications. [0003] There are various embodiments for this, which are used as manually operated hand-held meters, for example in laboratories for medical research, in which a defined amount of test solution has to be applied to several samples in each case. In the case of a larger number of samples, semi-automatic or automatic handling devices are also used for this purpose, wherein at the same time a certain number of hand gauges are clamped into the handling device and in the handling device these hand gauges are operated simultaneously and in the same way so that a larger number of samples is provided with one test solution. [0004] The task of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/08B01L3/00
CPCB41J2/18B01L3/0268B41J2/185B01L2400/0439B01L2200/142G01N35/1002G01N2035/1041
Inventor 弗兰克·奥特
Owner KBA METRONIC AG
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