SPR

Small Particle Reagent (SPR) is a well-known and utilized technique to develop latent prints on difficult surfaces such as wet surfaces like cold drink cans and automobiles with dew, oily surfaces, or textured surfaces.  Small Particle Reagent (SPR) is quick, inexpensive and effective on fresh fingerprints. SPR is composed of finely ground particles suspended in a detergent solution. These particles adhere to the fatty constituents of latent fingerprints to form a visible deposit. Latent prints developed using this method may be lifted using standard lifting mediums. The Mini SPR Kit is small enough to fit in a briefcase or crime scene kit and includes everything needed for a small scene or infrequent use.  The kit includes an 8 ounce spray bottle of premixed black SPR and an 8 ounce spray bottle of rinse solution packaged in a sturdy box.