Immersion et prises de vues photographiques des objets traités au Small Particle Reagent

Abstract

While searching for fingermarks using Small Particle Reagent (SPR) on items that have been submerged, the excess SPR is usually rinsed off by spraying water, causing runoff on the treated surface or soaking in a tank of clean water before drying. However, after rinsing it is possible to immerse the object immediately in a tank of clear water in order to carry out the detection and photographic shots of fingermarks. This technique will clearly improve the contrast and the quality of the papillary pattern. Oxidation of metallic objects will also be limited, as they are not exposed to air during photographic shots.