Dipeptide-based gelators can form hydrogels at low concentrations using a number of means. We have found that the method by which the gels are formed can have a profound effect on the properties of the gels. We have also shown that additives can fundamentally change the properties of the gels. We have used SANS to probe the nanostructures formed. We now wish ot extend this study to longer length scales to determine differences in microstructure, for example determining the mesh size of the gels. This is a fundamental property of interest for example in controlled release applications.