Optical Density Calibration

WSchick@AOL.com
Fri, 6 Feb 1998 02:12:15 EST

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