The Latent Print Processing section develops latent (hidden) prints on evidence that is submitted to the Chandler Police Department Forensic Services Section.  An initial surface examination is first conducted on the evidence by using white light, a forensic light source or RUVIS (Reflective Ultra Violet Imaging System).  The evidence is then processed by following a sequence guide that directs the forensic scientist to the particular processing techniques that will be used to develop the print depending on the type of evidence that is submitted.  Some examples of types of evidence are porous, non-porous or blood.  The Latent Processing section uses many processing techniques such as cyanoacrylate fuming, fluorescent dye stains, ninhydrin and powder to develop and secure the latent print.  Latent print images are then captured through photography or scanning.

Latent Processing Protocols