Browse Prior Art Database

Electrochemical Channel Flow Cells

IP.com Disclosure Number: IPCOM000042897D
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Jones, HL: AUTHOR [+2]

Abstract

An electrochemical channel flow cell suitable for use in high sure pressure liquid chromatography is constructed from glass slides on which electrodes have been vapor deposited. As shown in Fig. 1, the flow cell 10 consists of two glass slides 12A and 12B on which an electrode material 14 is either vapor deposited or etched into a predeposited layer. The slides 12A and 12B are separated by spacer(s) 16 of an inert material such as MYLAR* to form a sandwich which is held together by clamps, jigs or epoxy 18. In order that an electrical contact can be made to the working electrode and the auxiliary electrode (Fig. 2), the slides are offset in the short dimension. An inlet tube 20 and an outlet tube 22 are provided at each end, and a reference electrode is placed in a port 24.

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Electrochemical Channel Flow Cells

An electrochemical channel flow cell suitable for use in high

sure pressure liquid chromatography is constructed from glass slides on which electrodes have been vapor deposited. As shown in Fig. 1, the flow cell 10 consists of two glass slides 12A and 12B on which an electrode material 14 is either vapor deposited or etched into a predeposited layer. The slides 12A and 12B are separated by spacer(s) 16 of an inert material such as MYLAR* to form a sandwich which is held together by clamps, jigs or epoxy 18. In order that an electrical contact can be made to the working electrode and the auxiliary electrode (Fig. 2), the slides are offset in the short dimension. An inlet tube 20 and an outlet tube 22 are provided at each end, and a reference electrode is placed in a port 24. Several variations of this arrangement are feasible. As shown in Fig. 2, the glass slides 32A and 32B are made of photoresistive glass, and a channel 34 is etched in glass slide 32A. The auxiliary electrode 36 and working electrode 38 are vapor deposited on glass slide 32B. Flow cells with this design have little chance of turbulent flow, are easy to manufacture, are small in size, and could be disposable if the assembly costs are low enough. * Trademark of E. I. du Pont de Nemours & Co.

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