The other day I got a flyer in our fax from Advanced Polymer Systems for
photometric standards in liquid form. As I understand it, these are calibrated,
stable suspensions of microspheres that you measure in a conventional cuvette.
Their phone: 1-800-827-9283.
Regards
Michael Bodo
FibroGen Inc.
--------------------------------------
Date: 2/6/98 6:18 AM
To: Michael Bodo
From: uunet!AOL.com!WSchick
I am looking for a calibration for checking 0-4 OD range of photometers. I
thought at one time some densitometers for TLC had an optical wedge or step
that could check several points along a wide OD range.
Any suggestions?
Walt Schick
BioSepCo
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