Alfisol, Item 007: IExFit, version 3.4
Fit adsorption data based on ion exchange reaction models.
Display solid & liquid & gas phase speciation diagrams as a funciton of pH & redox conditions.

Product Details



Modeling competitive adsorption of sodium, hydrogen, phthalate and chloride on goethite. Easy!

An excellent research tool.
Easily confirm which ion exchange reactions are affecting your adsorption data.

A nice teaching tool.
Easily show how ion competition can impact adsorption results.

DOWNLOAD IExFit (version 3.4), Extended Edition (Free).
Copyright © 2020 by C.P. Schulthess.

This software will help you create pH-dependent ion-exchange models that fit your adsorption data.
It will also generate aqueous speciation of ions in solution, gas phase equilibria, solid precipitation predictions and redox conditions based on a user-defined reaction database. It can also simulate titration curves.

WINDOWS based application; uses .NET framework.
Please review the Software Disclaimer page first.
Need help? ... Open Installation Instructions.

Summary of revisions made since the release of version 1.0 (8 January 2015).


This software is written in C# for Windows.
It uses the .NET framework.