Tynemouth is just across the River Tyne from South Shields, Jarrow, and Hebburn, and lots of Durham families moved back and forth across the river, following the colliery jobs and port-related work.
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.
DFO DFO reacts with amino acids in fingerprints causing them to fluoresce. Use on porous surfaces such as paper, cardboard, raw wood and sheet rock paper. Not suitable for items that have been wet. Must be used before NINHYDRIN, SILVER NITRATE and PHYSICAL DEVELOPER. The use of an alternate light source is required since this is a fluorescing process. Photograph prints to document. Can interfere with examinations for handwriting, body fluids, trace evidence and most other forensic examinations. PHYSICAL DEVELOPER Physical Developer reacts with the components of sebaceous sweat to for a gray silver deposit. Use on paper, cardboard and light raw-wood.