In article ,
Mike wrote:

Any advice on a cheap, readily-obtaining material that I can use to
diffuse the light from the enlarger (below the lens). I want to use my
color analyzer, with its probe, as an exposure meter.

First a question: Which analyzer?

Second a reply which is possibly valid: LICI Colorstar supplies a
a 3 x 3 inch diffusion material with thier analyzers for that very
purpose, www.omegasatter.com maybe a place you can find it
premade, in theory you may be able to use thin sign grade white
plexi provided you work the light fall off into the exposure.
--
LF website http://members.bellatlantic.net/~gblank