Hi Alun, The material we use is cross linked polyethylene/EVA foam. We use the 4 PCF (pounds per cubic foot) variety it has tradenames of youngboard, artilon and epilon. (see http://smb.slac.stanford.edu/facilities/hardware/cassette_kit/dewar_schematics.pdf and http://smb.slac.stanford.edu/facilities/hardware/cassette_kit/FabricationDewarAndLid.pdf for how we have the large dewars for the SSRL cassette Clyde described fabricated. )
Regards, Mitch -----Original Message----- From: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On Behalf Of Alun R. Coker Sent: Thursday, October 09, 2008 6:51 AM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Foam Dewars Part II Hi All, I think the foam from these dewars would make excellent flooring in LN2 working areas (where most other flooring cracks). I have seen Judo mats made out of a foam that looks similar. Can anyone tell me what this foam is? Alun. -- Alun R. Coker University College London Division of Medicine, Royal Free Campus Centre for Amyloidosis and Acute Phase Proteins Rowland Hill Street London NW32PF Tel: +44(0)207 433 2764