what does physical developer react with in fingerprint residue?
Quantity: * Whole number only. Components of the original formulation of Physical Developer are NO LONGER available. Physical Developer is a Silver Nitrate based reagent which reacts with the lipids, fats, oils and waxes present in fingerprint residue. The PD3 Physical Developer Kit is a faster process and ready to use by simply mixing the contents of three pre-measured bottles. Parts A, B & C. Instructions Included. NOTE: The use of Maleic Acid as a pre-wash for paper evidence is strongly recommended.