The versatility and availability of adsorption techniques has led to their adoption in the majority of high value pharmaceutical purification schemes. As a result, the development process is often costly and time consuming. Furthermore, because of time constraints, full optimisation is often not achieved. However, the use of computer modelling can remove much of the empiricism from design. This leads to:

1.Effective targeting of key experiments
2.Improvements in process design efficiency.

A programme using FACSIMILE has been developed, which solves series of time dependent, still differential equations involving reaction, advection and diffusion. The power of the FACSIMILE solver has ensured that, despite the complex nature of the biological systems under consideration, efficient desktop PC simulation is possible.