From: E.braswell <BRASS@UCONNVM.UCONN.EDU>
  To  : David <djs17@york.ac.uk>
  Date: Fri, 30 Apr 99 14:40:03 EDT

Low speed

Dear Dave,  It is possible to get good results at 3K with the absorpton
system.  Sometimes I get good runs at 2K , but strangely enough, you must
do all your calibrations at 3K and then go back down.  I have never been
able to get good results at 1 K.  I don't have any idea about the interference
system.  But I don't see why it wouldn't.  Try it!  Of course at 1 K
you will see some meniscus broadening.  Yours, Emory H. Braswell

Emory H. Braswell
Professor of Biophysics and Head,
National Analytical Ultracentrifugation Facility
U-125
University of Connecticut
Storrs, CT 06269-3125
TEL 860 486 5032
FAX         5005
E.BRASWELL@UCONN.EDU