[NewCandle] Platinum counter-electrode

[Jones Beene]

Why not ditch the welding, and plate the wire with platinum on the exposed
end.



-----Original Message-----
From: newcandle-bounces at ipdiscover.com 

Thanks! But I've got enough for now, and I need to resolve
the issue irrespective of what stock I have on hand.
You should make a probe to use for your experiments.

That said, if you have any scraps, I'd like to make some platinum
blacking solution.

I sent an email to one of the big epoxy vendors with tech
support, we'll see what they say.

K.

-----Original Message-----

Hi Keith,

Well, fancy that... platinum wire you say:)  How much ya need?  One of the
advantages of working with high temperature type R and S thermocouples over
the years is that ya get a stash of Pt wire built up from dead units (well,
and some of the Pt-10%Rh too)  I could send you maybe a max length of about
12 to 18 inches as a contiguous piece.  I keep it around otherwise for
occasional crafting and for catalytic fun.

n

> From: Keith Nagel <NewCandleAdmin at ipdiscover.com>
> Subject: [NewCandle] Platinum counter-electrode
> To: "New energy for the new world." <newcandle at ipdiscover.com>
> Date: Monday, May 10, 2010, 2:45 PM
> I turned the house upside down shook,
> and out popped my
> platinum wire and the old electrode! It looked a little
> long in the tooth, so I rebuilt it and sealed it
> with hot glue. Testing produced the same results
> as it did the last time I messed with it; poor stability.
> This despite glowing reports like so.
>
> https://info.ngwa.org/GWOL/pdf/991165081.PDF
>
> My basic design is identical to this.
>
> http://geoweb1.tamu.edu/Faculty/Herbert/docs/05OwensPtElectrode.pdf
>
> and I assumed like the author that my problems
> had to do with leakage into the body of the
> probe and the bimetal junction. The hot glue
> does not seem to be providing a good seal after
> soaking.
>
> Any advice about sealing these elecrodes? At over
> 100USD per foot of wire, there's a big cost
> savings to be had using short segments of active
> material. I don't like the idea of using epoxy
> to begin with, or hot glue for that matter, due
> to contamination issues.
>
> K.
>
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>





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