UV filters

Jeanne Drewes <jdrewes<-a t->jhu< . >edu> writes

>I am looking for recommendations for uv protection for glass on
>table cases.

The conservation literature used to include references to an
ultraviolet-filtering varnish that could be applied to glass; this
material turned out to be entirely inappropriate for museum use. It
is hard to imagine any material that could be applied to glass
outside a factory that would not affect its transparency in some
way. There are several other solutions: fabric covers for the cases
when no one is viewing the pieces, UV-filtering Plexiglas used in
the cases instead of glass, UV filtering on the skylights, etc. If
the light is bounced around off walls that happen to be painted with
paints that absorb the UV, there may be less UV hitting the objects
than you think. A conservator familiar with these options should be
able to help provide the cheapest and most efficient method after
seeing the site and the objects.

B. Appelbaum

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                  Conservation DistList Instance 11:13
                  Distributed: Friday, August 1, 1997
                       Message Id: cdl-11-13-001
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