UVT plastics still have considrable absorption at the actinic wavelengths (50% absorption at 275nm), which are the wavelengths of peak emulsion sensitivity. They are used in sunbeds where you don't want the customer exposed to the carcinogenic actinic wavelengths.
Malcolm
I don't suffer from insanity I enjoy it!
--- On Mon, 8/16/10, Alessio Sangalli <alesan@...> wrote:
From: Alessio Sangalli <alesan@...>
Subject: Re: [Homebrew_PCBs] UV: alternatives to glass?
To: Homebrew_PCBs@yahoogroups.com
Date: Monday, August 16, 2010, 10:28 PM
On 08/16/2010 02:17 PM, Norm wrote:
> stock it. A quick Google for UVT Plastic yielded:
> www.polymer*plastic*s.com/transparents_*uvt*a.shtml,
> plus a bunch more.
Why did you put random asterisks in the URL? The correct one is:
http://www.polymerplastics.com/transparents_uvta.shtml
bye
as
[Non-text portions of this message have been removed]Message
Re: [Homebrew_PCBs] UV: alternatives to glass?
2010-08-16 by Malcolm Parker-Lisberg