We’ve had issues with the adsorbent material inside a dewar peeling out as 
small particles but they were white in color. Not sure it’s the same.

If the dewar is defective the stuff will ultimately find its way to and gum up 
the goniohead motors, so it’s important to address this.

Thierry

From: CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> On Behalf Of Jurgen Bosch
Sent: Friday, December 4, 2020 11:18 AM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] Tiny rocks on my CX100 shipping dewar

EXTERNAL EMAIL – Use caution with any links or file attachments.
That looks like gravel from the driveway where the dewar was tossed around
Jürgen


On Dec 4, 2020, at 11:04 AM, Tanner, John J. 
<tanne...@missouri.edu<mailto:tanne...@missouri.edu>> wrote:

When we opened our CX100 shipping dewar returned from APS via FedEx this week, 
we observed what appears to be tiny rocks on the rim below the foam neck core:

https://www.dropbox.com/s/ky09a1vbm9t0mrl/CX100withrocks.png?dl=0

Has anyone seen this before? Is this perhaps the absorbent material from the 
inside of the dewar?

Thanks,

Jack

John J. Tanner
Professor of Biochemistry and Chemistry
Associate Chair of Biochemistry
Department of Biochemistry
University of Missouri
117 Schweitzer Hall
503 S College Avenue
Columbia, MO 65211
Phone: 573-884-1280
Email: tanne...@missouri.edu<mailto:tanne...@missouri.edu>
https://cafnrfaculty.missouri.edu/tannerlab/
Lab: Schlundt Annex rooms 3,6,9, 203B, 203C
Office: Schlundt Annex 203A

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