Resumen de The use of liquid latex for soot removal from fire scenes and attempted fingerprint development with ninhydrin
Susan W. Clutter, Robert Bailey, Jeff C. Everly, Karl Mercer
In developing latent prints on cartridge casings and shotgun shells, multiple chemical processes should be used in order to obtainthe best results. In Phase I, this study established an optimal chemical sequence for both Brass and Nickel cartridge casings based on six sequencesinvolving four chemicals: Cyanoacrylate, Black Powder, Rhodamine 6G and Acidified Hydrogen Peroxide. Phase II was a validation study of PhaseI involving a random sample of both Brass and Nickel cartridge casings, which were processed according to the determined optimal sequences. Inaddition, ribbed shotgun shells were processed under Phase I results and determined to be dependent upon the utilization of a CrimeScope at515 nm. Consideration should be given to the type of cartridge case being examined. Although limitations exist, some chemical sequences undeniablywork better than others. All photographs were manipulated with AdobePhotoshop. All results were verified by a senior latent print examiner
