Preservation Framework Online
Radiation - Agents of Deterioration
Ultraviolet:- disintegrates, fades, darkens, and/or yellows the outer layer of organic materials and some coloured inorganic materials.
- fades or darkens the outer opaque layer of paints and wood to a typical depth of 10 µm to 100 µm, or to greater depths on more transparent layers.
 | Avoid | | Block | | Detect | | Respond |
| Recover/Treat |
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