ChemSep is a software system the allows you to simulate the distillation, absorption, and extraction actions. ChemSep integrates flash calculations, the classic equilibrium stage column model and a nonequilibrium or rate-based column model in one easy to use program. The ChemSep GUI allows you to simulate any problem within minutes and to export your results in a variety of formats, including spreadsheet, text, and html. You can use ChemSep in stand-alone mode or inside any flowsheet via CAPE-OPEN. The nonequilibrium model in ChemSep is unique in providing an unsurpassed number of mass transfer correlations and flow models as well as liquid-liquid extraction and three phase distillation column models. ChemSep is designed for use in courses on thermodynamics and/or separation processes and features an easy to use interface for Windows, equilibrium and rate-based column models, integrated graphics (with GNUplot), and export capabilities (e.g. to Excel (see below), Word, and html). ChemSep integrates flash, the classic equilibrium stage column model and a nonequilibrium or rate-based column model in one easy to use program.Here are some key features of \"ChemSep Lite\":