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UV Fade Calculator
Calculate the estimated time before noticeable degradation based on ink type and display conditions.
JS required for calculator. Sharpie fades fast; Iron Gall fades slow. Keep away from direct sunlight.
Standard Sharpie / Marker
Ballpoint Pen (Modern)
Fountain Pen (Dye-based)
Iron Gall (Historical)
Standard Glass (High UV exposure)
Conservation Glass (99% UV block)
Archival Storage (Dark storage)
Estimated Lifespan Before Noticeable Fade