Commercial process simulators do not contain all the components required for simulation of milk processing. The aim of this work was to create credible hypothetical components to simulate milk processing using commercial process simulators. To create milk components in the simulator component library, a hypothetical component database was built in a commercial process simulator with the values and functions to estimate the necessary physical properties of the milk. As a result process simulation can now be extended to the dairy industry. (C) 2013 Elsevier Ltd. All rights reserved.