Latent print residue can be divided into two categories, water-soluble and water- insoluble. On most paper items the latent print residue is absorbed in to the document. Visualization is usually achieved with a chemical reaction between a reagent and one or more of the constituents in the latent print residue.
At GoEvidence Forensic Laboratories we understand the complexity of latent print development on documents and paper products. We know that chemical reagents may not always give satisfactory results. We offer conventional and novel testing techniques to solve these complex problems. Understanding the materials and the conditions that they have been exposed to is an important part of solving these complex problems.
Latent prints from water-soluble documents 
Latent prints from water- insoluble documents