Leucocrystal Violet reacts with the heme-group in blood to give a violet color. Its application can be used to identify bloodstains that are not visible and to enhance and provide additional contrast to bloodstain patterns that are visible. This reagent contains hydrogen peroxide, so if used on heavy bloodstains foaming may result and cause loss of detail. Leucocrystal violet is typically used on porous surfaces. These items are not eligible for return.
Developed by 3M scientists as a CFC replacement, Novec is a safe, non-ozone-depleting solvent that is known for producing the crispest ridge detail on porous surfaces. Use as a carrier solvent with Ninhydrin or DFO. Its low surface tension, low viscosity, and high density allows the fluid to more thoroughly and easily care dissolved DFO and Ninhydrin to the edges of the fingerprint. And since it doesn't absorb moisture, the ridge diffusion of the print is maximized. Use on a wide range of inks and substances and experience minimal smearing or running.