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Risks of iron gall ink on paper - Robs suggestions Dec 2 2005, Darkening yellowing of paper result of Previously oxidized paper, Excess Fe, Cu.. result of Ink composition, Excess Fe, Cu.. result of Ink quantity, Darkening yellowing of paper result of Previous deacification treatment, Paper - uninked areas breaks result of Paper loses strength, Paper: tears and losses result of Paper - uninked areas breaks, Cellulose reaction with moisture accel. by Elevated RH, Paper in inked areas breaks result of Paper loses strength, Loss of visual integrity result of Loss of Information, Alkaline degradation - O2 independent accel. by Previously oxidized paper