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Plateau effect

The upper age limit of ink solvent-loss methods (approximately 5-7 years in most storage conditions), beyond which phenoxyethanol has been substantially lost and the aging index ratio no longer discriminates between older inks; absolute dating is unreliable beyond this plateau.

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Related terms

Aging index (Aginsky)ASTM E2494Dye-decay dating (LaPorte method)Machine direction (MD)Optical brightening agent (OBA)Rag paperSolvent-loss methodTerminus post quemWatermark

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