buy or borrow a UV meter, it is the only way to be sure of ultra violet
light levels.
they are very expensive, so if you can borrow one, great.  If you make the
investment
to buy one, you might let other institutions in your area know and share.

Frank E. Thomson, III
Curator
Asheville Art Museum
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----------
> From: Christine Wolf <[log in to unmask]>
> To: [log in to unmask]
> Subject: UV florescent light filters
> Date: Wednesday, July 02, 1997 2:53 PM
>
> Hello all,
>
> I'm trying to determine how long UV florescent light filters last before
> they should be replaced. I've called several archival companies that sell
> these filters and have gotten different answers.  My question to the list
> is, does anyone know if there is a standard life for them (say 5 years as
> Light Impressions says), or if the lifetime differs based on the
> manufacturing process?  University Products tells me that their filters
> will last indefinitely, does this ring true?
>
> Thanks for any responses,
>
> Cris Wolf Harper
>
> Collections Manager
> UIHC Medical Museum
> 8024A JCP/200 Hawkins Dr.
> Iowa City, IA 52242
> (319) 356-8475  FAX (319) 356-3862
>
> [log in to unmask]