[labnetwork] C4F8 being hard to find?

[Dennis Schweiger]

Guy,

our vendor has been using Electronic Fluorocarbons in Pennsylvania.

Dennis

734.647.2055 Ofc

"People can be divided into 3 groups - those that make things happen, those
that watch things happen, and those that wonder what happened."  Within
which group do you belong?


On Wed, Nov 25, 2020 at 4:55 PM Dennis Schweiger <schweig at umich.edu> wrote:

> Guy,
>
> We used to purchase C4F8 from Concord Specialty Gases (1-800-818-5109).
> However back in 2013 we switched and now use our local specialty gas vendor
> (Cryogenic Gases (313)835-5513) for sourcing this material as it was
> less hassle to return the empties.  I am not sure who they're using as the
> supplier, but will check with them.
>
> Dennis Schweiger
> University of Michigan/LNF
>
> 734.647.2055 Ofc
>
> "People can be divided into 3 groups - those that make things happen,
> those that watch things happen, and those that wonder what happened."
> Within which group do you belong?
>
>
> On Wed, Nov 25, 2020 at 8:30 AM DeRose, Guy A. <derose at caltech.edu> wrote:
>
>> Hello community,
>>
>>
>>
>> From the time we re-opened our cleanroom back in June through now, we
>> have had challenges sourcing C4F8 (Halocarbon C318) gas for our plasma etch
>> tools.  We have tried three different vendors, and the lead times have been
>> unusually long.  Are there any gas suppliers that any of you have had good
>> luck sourcing this gas within a couple of weeks?  I have been waiting for
>> one cylinder to be shipped since October 5 and am still waiting.  We have
>> been trying to get enough to have a spare on hand, but sourcing has been an
>> issue to the point of running empty while waiting for a replacement.
>>
>>
>>
>> Thanks,
>>
>> Guy
>>
>>
>>
>> Guy DeRose, PhD, Member of the Professional Staff
>>
>> Associate Director of Technical Operations, Kavli Nanoscience Institute
>>
>> California Institute of Technology, Pasadena, CA USA
>>
>> (O) 1-626-395-3423 (M) 1-626-676-8529
>>
>> http://kni.caltech.edu
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>
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