From: Ed Stander (glassact@compuserve.com)
Date: 09/25/01-04:53:52 AM Z
In dichromate processes, and perhaps some others, the greatest exposure
effect appears to be in the range of 200-310nm. Unfortunately, these UV
frequencies are quite dangerous to us humans, and so are usually limited by
the manufacturer, who places a piece of plate glass between the UV source
and the outside world.
I have, for example, two exposure units here: a Theimer Violux and an
Olec AI-15. Both are capable of producing exposures in this range, but only
if the safety glass is removed.
If one wishes to test the utility of quartz glass, one must first make
sure that their light source produces light in the range usually blocked by
fused quartz....
Just a short comment - Ed
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