The kinetics of the reaction of Ageless^TM with oxygen were studied and an expression was obtained for the rate of oxygen reaction with Ageless: an empirical first order rate equation which involves the chamber volume and the Ageless capacity as well as the concentration of oxygen. Two factors which decrease the rate of reaction, low relative humidity and restricted access of oxygen to the Ageless packets, were evaluated. The usefulness of an oxygen scavenger such as Ageless in prolonging the lifespan of an oxygen-free atmosphere in a museum case is discussed.