Equilibrium Water Activity of Binary Dry Mixtures
Equilibrium Water Activity of Binary Dry Mixtures
This Demonstration shows the equilibration of moisture in binary mixtures of various compositions stored together in a sealed container. It shows how moisture is lost by the wetter ingredient and gained by the drier one so that both will reach the same equilibrium water activity. It plots the moisture sorption isotherms of the two ingredients, their initial moisture contents and the water activities initially and after equilibration. It also displays the isotherm equations and other relevant quantities.