Light

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• Most harmful light wavelength is ultraviolet (natural sunlight and fluorescent lighting) - example: 17th century embroidery

• Be mindful that light produces heat

• Assessment: Blue Wool Standard Cards

• Cheap solutions: low lighting, curtains or blinds

• More expensive solutions: UV-free fluorescent tubes; UV filtering sleeves; UV filter film; motion detector light trigger

• Recommended light level is less than 100 lux (can use single reflex camera light meters to measure light in an area)

• Beware of photocopiers: Make a single reference copy for frequently accessed materials.

 

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