Paper made from wood pulp is not necessarily less durable than a rag paper. The ageing behavior of a paper is determined by its manufacture, not the original source of the fibres. Furthermore, tests sponsored by the Library of Congress prove that all paper is at risk of acid decay, because cellulose itself produces formic, acetic, lactic and oxalic acids. COUNT 2
QSN1 Who sponsored the tests that show that all papers are subject to acid decay? ANS1 Library of Congress QSN2 Besides formic, acetic, and lactic acid, what type of acid does cellulose produce? ANS2 oxalic