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As an interest in permanence of paper has been increasing, the Testing Standards Committee of J. TAPPI recently prepared J. TAPPI Testing Standard No.50 [Accelerated Ageing Conditions for Paper and Board].In preparing it, the committee carried out some surveys including the conditions which are taken actualy in this country, foreign standard methods, literatures concerning effects of moisture, and performance of temperature-humidity chambers. This is a report of the surveys.

Some surveys on accelerated ageing conditions for deterioration test of paper and board.