CRYO PROTECTANT

Lori Kohlstaedt kohlstaedt at sbmm1.ucsb.edu
Wed Nov 8 01:37:43 EST 1995


So I might as well say this since someone is bound to:  I have had the
experience of having successful freezes for a certain crystal only from
liquid propane.  Freezing either in the N2 stream or in liquid N2 didn't
work.  The liquid propane-cooled crystals showed decreased mosaicity while
the crystals frozen by the other two methods showed greatly increased
mosaicity.  Maybe this is corellated with crystal size or geomentry?

Liquid propane is used safely by car thieves all across the nation :-)  I
suggest using it only in a hood.  

***************************************
Lori Kohlstaedt
Dept. of Chemistry, University of California, Santa Barbara
Santa Barbara, CA 93106
(805) 893-7040
<Reciprocal Space, the Final Frontier>
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