Spearlab foam dewars in use

Foam dewars are used at an x-ray crystallography beamline at the Advanced Light Source, a synchrotron facility in Berkeley, California.

The samples are cooled with liquid nitrogen, and transferred and processed.

This video shows footage of the standard Spearlab 800 ml dewar (purple), which holds a Rigaku brand robot cartridge. Also shown is the tall 1800 ml dewar (green), which holds cartridges and canes transferred from a conventional shipping dewar.

These foam dewars are available for purchase at www.spearlab.com

One motivation for developing a foam dewar was to replace the low-profile glass Dewars, which were awkward to handle. When a glass Dewar is dropped, it implodes and then sends shards of glass into the lab. This is a serious safety hazard.

For crystallography, another advantage to using a foam safety dewar instead of a glass Dewar, is that less ice is accumulated in the foam dewar. Ice causes unwanted x-ray scattering.

This video was made very quickly and without fancy effects or narration, but it should show the viewer how easy and effective the foam dewars can be.

Category:

Science & Technology

Tags:

• foam
• dewars
• spearlab
• cryogenic
• liquid
• nitrogen
• dewar
• crystallography
• jon
• spear

[AndresFR1988]

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