# Make Mixture Dialog

Users can create fluid mixtures by Mole or Mass %. The image below shows a gas mixture created by Mole % where the individual fluid components have been added and the percentage composition of each defined. Note, when creating a fluid mixture, the Percent Sum must total 100% otherwise you will not be able to model the fluid. To display the Fluid Mixture Dialog: ▪Select the 'Database | Fluids...' menu item and click the 'New Mix' button.