Three studies in progress at the Conservation Center of the Institute of Fine Arts of New York University are (1) impregnating agents; (2) poly (vinyl acetate) emulsion adhesives; and (3) pastes and glues. The impregnating agents tested were soluble nylon, poly(vinyl alcohol) and Regnal, an acetal copolymer. Ten commonly used poly(vinyl acetate) emulsion preparations were tested. Four methyl cellulose preparations, seven wheat and rice derivative formulations, and three glue formulations were tested. The observations include measurement of mechanical properties by folding tests; surface pH measurements; objective color and reflectance; reversibility -- AATA