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Visible prints are made when fingers touch a surface after toughing a colored substance like blood, ink, grease, paint, ect. Plastic Prints Are made when ridge impressions are left in soft surfaces like putty, wax, soap, dust, ect. On hard and non-absorbent surfaces Ex. tile, mirrors, painted wood Developed with powder On Porous surfaces Ex. Papers cardboard, and cloth Devolved using chemicals RUVIS Reflected Ultraviolet Imaging System Used to locate latent prints Powder Used once prints are located Comes in several colors, magnetic and non magnetic Adheres to perspiration and oils in print Can be photographed or collected with tape Super Glue fuming Used on nonporous surfaces Ex metals, electrical tape, leather and plastic Fumes of super glue adhere to proteins in print and make a white visible print Made of 99% cyanoacrylate ester, which is what makes the prints visible Can be done in a fuming chamber or with a handheld wand Iodine Fuming Iodine crystals are heated and fumes combine with print to make them visible Not permanent, will fade quickly Ninhydrin Physical Developer Reacts with amino acids in prints to make a purple blue color Is a silver nitrate based reagent Used when other techniques fail Other chemicals used include those that cause the print to fluoresce under a laser or high intensity light source such as… Quartz halogen, xenon arc, indium arc Small Objects Transport entire object Large objects Photograph first Allows print to be compared to digital database Then lift with tape and place on labeled cards Loop Count = 8 Body Part Body Height Outstretched reached of both arms Trunk height Width of the head Length of the head Length of the right ear Width of the right ear Length of the left foot Length of the left middle finger Length of the left little finger Will West's William West's measurements in measurements in cm cm 178.5 177.5 187 91.2 19.7 15.8 14.8 6.6 28.2 188 91.3 19.8 15.9 14.8 6.5 27.5 12.3 12.2 9.7 9.6