For what it is worth; in some of the theatres I inspect use has been made
of a fold up, matt enameled surface, metal screen to cover the glass. The
screen carries the laser warning sign and is securely fixed in the closed
position when the laser is in use. The screen is easily cleanable and can
be decontaminated acceptably from the microbiological standpoint.
Roland
Roland Blackwell (9207)
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