Browse Prior Art Database

Sampling Device for Ion Chromatography

IP.com Disclosure Number: IPCOM000040712D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Braitmayer, R: AUTHOR [+2]

Abstract

The device described is used to take samples for calibration and measuring. Falsified measuring results, caused by contaminations from the calibrating solution, are avoided in that, during measuring, part of the fluid to be tested passes the inlet tube for the calibrating solution in a direction opposite to that in which it is passed by the calibrating solution during calibration. Figs. 1 and 2 are cross-sectional views of device 1, showing the valve setting and the direction of flow during calibration and measuring. Arrows 2 and 3, respectively, indicate the inlet directions of the fluid, such as deionized water, and the calibrating solution.

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Sampling Device for Ion Chromatography

The device described is used to take samples for calibration and measuring. Falsified measuring results, caused by contaminations from the calibrating solution, are avoided in that, during measuring, part of the fluid to be tested passes the inlet tube for the calibrating solution in a direction opposite to that in which it is passed by the calibrating solution during calibration. Figs. 1 and 2 are cross-sectional views of device 1, showing the valve setting and the direction of flow during calibration and measuring. Arrows 2 and 3, respectively, indicate the inlet directions of the fluid, such as deionized water, and the calibrating solution. Valve 5 is open only during calibration so that the calibrating solution is capable of flowing into secondary pipe 7 and from there to main pipe 8 and past sampling means 9 to drain 6 as well as directly to drain 6. During calibration, three-way cock 4 is set such that the entire fluid flows directly to drain 6. In the measuring position of

(Image Omitted)

cock 4 (Fig. 2), the entire fluid flows into the above-described device. Having passed cock 4, the fluid is divided, one part flowing through secondary pipe 7 and past valve 5 to drain 6, which prevents any calibrating solution still present in the secondary pipe or entering through closed valve 5 from reaching the main pipe, and the other part continuing to flow through main pipe 8 and past sampling means 9 to drain 6. Sampling mean...