Not a concern: we'd just build a walled tub of
sorts, put in enough de-
yellowing solution to cover the yellowed item in question, and have the
plexi sitting well above it. The solution would never be anywhere near
the plexi.
Evan,
Actually I was thinking the tub would be built out of plexi. That way you
could get the same level of light from all around as opposed to just from
the top (hence the reflective surfaced for the container). That way you may
get more even UV illumination on all the surfaces especially in the nooks
and crannies. Just a thought though as it may not improve or make things
worse.
-Ali