The three properties that you enter for the Reference Fluid A special type of Fluid element that provides a basis for defining partition coefficients between media for the various species in the model (i.e., the ratio of the species’ concentration in the medium to its concentration in the Reference Fluid at equilibrium). are "passed through" the element and become outputs which you can then link to other elements.
You can save these results by clicking Final Values and/or Time Histories. Checking one of these causes all three outputs to be saved as results. If you wish to save only one or two of these as results, you can use the context menu of the output (accessed via a right-click) in the browser An alternative view of a GoldSim model, in which elements are displayed in a tree, and organized either hierarchically, or by type. to turn on or off one or more of the three outputs. In this case, the checkbox in the dialog would become gray (indicating that some of the results will be saved).
The display units The units (e.g., m, g, $/day) in which an output is displayed within GoldSim. for these three outputs are specified immediately to the right of the inputs (the Relative Diffusivities are dimensionless, and hence have no display units).