[labnetwork] ICP analysis for unknown grease

[Mark Weiler]

Hi Saba,

Do you have a portable RGA?  Greases and oils leave tell-tale signature peaks to tell us what they are, and then it’s a matter choosing the appropriate removal method.  As far as the bulk, visible quantities, are you sure you were able to both find and remove it all?

Best Regards,

Mark

________________________________________________________________

Mark Weiler
Manager, Equipment & Facilites
Claire and John Bertucci Nanotechnology Laboratory
Eden Hall Nanofabrication Cleanroom
Carnegie Mellon University
P: 412-268-2471
F: 412-268-3497
http://www.nanofab.ece.cmu.edu


<https://www.linkedin.com/in/marksbasics>[cid:2D2E01E3-CEC1-4F48-A845-224D8D7CED12 at wv.cc.cmu.edu]

On Apr 12, 2021, at 10:37 AM, Saba Sadeghi <saba.sadeghi at uwaterloo.ca<mailto:saba.sadeghi at uwaterloo.ca>> wrote:

Dear colleagues,

I have found a an unknown contamination in the loadlock of our the UHV system. It has a white, greasy, soft  texture. I'd like to know the elemental analysis of it since after wiping the system with IPA and baking it the vacuum didn't improve and I am afraid it must have left residuals.
Would you know any company that offers elemental analysis/ ICP to identify unknown substances?

Thank you,
Saba

--
Saba Sadeghi, PhD
Quantum Devices Fabrication Scientist
Email: saba.sadeghi at uwaterloo.ca<mailto:saba.sadeghi at uwaterloo.ca>
_______________________________________________
labnetwork mailing list
labnetwork at mtl.mit.edu
https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20210412/07b30017/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: images.png
Type: image/png
Size: 720 bytes
Desc: images.png
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20210412/07b30017/attachment.png>