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From: "Lars Thomsen" <thethomsens@telia.com>
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Subject: Electrode problems !
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I have a structure where I want to insert a small electrode. The preferable
electrode is Ag/AgCl (I guess, since everybody doing electrophysiology is
using that). However, the amount of current I have to draw will make the
AgCl deposit rather big compared to the structure and then I am afraid that
the depletion zone will exend to deep into the bulk solution. I thought that
I might use a Pt electrode but that changes the pH with several logs (with
the current I need and the volume of solution I have).

Do you have any suggestions for an electrode suited for small structures
(micrometer scale).

Cheers,
Lars Thomsen







.