.TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourDensity_psxi .TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourDensity_psxipartial function vapourDensity_psxi = TILMedia.BaseClasses.PartialVLEFluidObjectFunctionPrototypes.vapourDensity_psxi;