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Clark Sensor for Dissolved Oxygen. How to make them work

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Nitopi Luca

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Feb 9, 2000, 3:00:00 AM2/9/00
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Hallo!

I am figthing against a clarck electrode in order to make it work properly.

I used a Ag electrode (about 7 mm2) and a Pt electrode (about 25mm2) into a
1..3N KCl solution

Electrodes are planar , concentric with Ag in the middle.

cell volume : 90mm3

Teflon membrane tested : 50 - 100 - 200 um

Applied potential : from 0.5 to 0.9 V

I can see no response with oxygen change in test solutions (saturated, zero
oxygen) in the current flowing into
the cell but strong Ag cloration occurr.

Can someone give me a usefull hint???

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