From: D.Schubert <schubert@biophysik.uni-frankfurt.de>
  To  : Michelle Arkin , John Philo , rasmb@bbri.org
  Date: Thu, 29 Mar 2001 11:52:19 +0200

Re: Used Optima XL-A

 Dear Michelle, dear John,

  I certainly think (or at least thought) that a used Optima XL-A, after
having
  been checked and repaired at Palo Alto, should be in a good state. Ours is
not,
  and this is mainly due to a very low intensity. The latter, in turn, is
mainly
  due to the monochromator which really exterminates light: If we put the
new
  (old) monochromator into our old maschine (buildt in 1992), intensity
drops by
  nearly a factor of 3. And this is not a problem of imperfect matching: If
we
  put our old monochromator into the "new" maschine, intensity goes up by
the
  same factor (though it is still lower than in our old maschine, which
  nevertheless is not better than average). Up to now, Beckman simply did
not
  react to our well-documented complaints. Fortunately, we still have a bank

  surety by them.

  Best regards,
  Dieter
  --
Prof. Dr. Dieter Schubert
Institut fuer Biophysik der JWG-Universitaet
Theodor-Stern-Kai 7, Haus 74
D-60590 Frankfurt am Main
Germany
Tel. +49 (0)69 63017073
Fax  +49 (0)69 63015838