The Isogeochem wiki also has a short write up concerning cleaning:
http://isogeochem.wikispaces.com/repair+tips#nafion with links to Permapure.
Paul Eby wrote:
> Be cautious with heating: I've done that and degraded the Nafion to
> the point that it had to be replaced....
> Paul Eby
> University of Victoria
> At 09:05 AM 16/06/2008, you wrote:
>> I believe Nafion traps are fairly robust and don't "break down".
>> Certainly material could flow through them that would degrade them.
>> If you suspect the ability for it to remove water, you might try
>> lightly heating it while helium is flowing...you will typically get a
>> fair bit of water off. Perhaps you had a wet helium cylinder? Are you
>> detecting a leak? I have had bad luck with the base of the sample
>> open split that seems to begin leaking after thousands of samples.
>> Andrew Schauer
>> Department of Earth and Space Sciences
>> University of Washington
>> Seattle, WA 98195
>> [log in to unmask]
>> ----- Original Message ----
>> From: Joe Lambert <[log in to unmask]>
>> To: [log in to unmask]
>> Sent: Monday, June 16, 2008 7:21:24 AM
>> Subject: [ISOGEOCHEM] Gasbench Nafion Traps
>> Hi everyone,
>> I was hoping to get some advice regarding the two Nafion water
>> in Thermo's Gasbench. Can anyone please explain the symptoms of a
>> trap that is no longer functional? I'm assuming the trap directly
>> after the
>> sample needle is typically the first to go. Is there a way to test
>> trap has the problem? Finally, what is the expected life of Nafion
>> We've had about 7,000 samples through the machine with only a few
>> being water samples.
>> Thanks in advance,
>> Joe Lambert
>> Alabama Stable Isotope Laboratory
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