The manual unit cell is based on the building screen and the parameters you choose to create a simulated intrusion curve using the dimensions and parameters you specify. A screen shot of the manual unit cell page is shown in the next figure.
A good way to use the manual unit cell screen is to keep all the parameters constant except for one parameter and see how this affects properties of the unit cell such as how the pore and throat size distribution is changed, or how the new unit cell filters particles. These changes provide users with the ability to perform sensitivity analyses which is commonly required for research purposes. By changing just one parameter and then running an identical batch operation on the new unit cell you can generate reports showing how the properties change. This can be used as a design tool for investigating properties of materials which you have not yet manufactured.
Purists may wish to attempt the generation of a unit cell from scratch. However, the current PoreXpert Build does not allow for reading in a priori user-generated unit cells, so we suggest you contact us for advice if you wish to do that.