Great Gobs of Grease !!

[John Geary]

OK, grease fans, here is the answer to your most urgent inquiries
concerning the utility of Apiezon in your dewars.  Or, at least the
vapor pressures, anyway.  There is also some data on melting points,
which are interesting in view of the fact that some of us routinely
bake out our dewars, sometimes with the CCD installed (who, ME ??).

Apiezon
Grade             Vapor P (torr)@20C         Melting Pt.(C)

  H                     2E-9
  J                     5E-8
  K                     5E-9
  L                     8E-11                     47
  M                     2E-9                      44
  N                     8E-10                     43
  T                     5E-9                     125
 100                    8E-11                     47
 101                    5E-6

And here I thought that L meant Light and M meant Medium !!

             OOo O                John Geary
             O oO                 PADI DM-52283 
              o                   geary at cfa.harvard.edu 
       _____ o 
      (_/-\_).. 
     ===(O).          "I'd rather be diving"