Blue Foot Print Spray - Forensics Drug Detection This mixture will then be

This mixture will then be dissolved in 100 milliliters of water

or visualize markings on hands left by an invisible aerosol marking system

Each wipe is sensitive to trace amounts of residue

presumptive testing that catches 25 illicit drugs using no more than two tests

With that said

Blue Foot Print Spray - Forensics Drug Detection This mixture will then beBlue is a unique tool for the development of footprints. Spraying directly on a non porous surface will reveal the pattern of any undisturbed footprint that exists. The pattern will appear blue on a yellow background. It can be used on wooden, stone and linoleum floors and similar surfaces, which makes it an easy tool for footprint visualization, when casting is not an option.