The deposit formed by Small Particle Reagent is primarily what color?

The correct answer is that the deposit formed by Small Particle Reagent is primarily grey, but can also appear in white and black. Small Particle Reagent is primarily used for the development of latent prints on wet or non-porous surfaces, such as glass or plastic.

When the reagent comes into contact with the moisture in the latent print, it reacts and adheres to the lipids, sweat, or contaminants in the print, leading to the formation of a visible contrast. The resulting deposits can vary in color due to factors such as the surface on which they are developed and the background against which they are viewed. The inherent grey color can often appear white or black depending on these conditions, making it versatile for development on various surfaces.

This characteristic is valuable for forensic analysts as it provides clear visibility against different backgrounds, aiding in the detection and analysis of latent prints in various crime scene scenarios.