De-yellowing results

[Evan Koblentz]

>> Glass blocks UV light. This is why EPROMS were made with quartz windows even though glass would have been much cheaper. Regular acrylic plastic will block UV as well, but special types are available that allow
>> transmission of UV (such as for sun room roof panels and tanning beds).
> My other concern with Plexi-Glass, and this could be completely unfounded, is that would it etch or get damaged by high concentration peroxide?

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.