Reveal high contrast fingermarks whilst suppressing background interference
Despite the vast quantity of fingerprint treatments currently available, examiners continue to be frustrated by a number of ‘difficult’ substrates.
Multi-coloured and densely patterned backgrounds, reflective metal surfaces and substrates that fluoresce at the same wavelengths as common fluorescent fingerprint treatments, can prevent the successful imaging of fingerprints.
However, when dusted with fpNATURAL® infrared fluorescent powders, interference can be removed to reveal high contrast prints.
The one-step fluorescent fingerprint fuming process
The Foster + Freeman MVC/D range of cyanoacrylate fuming cabinets and the MVC lite portable fuming systems are designed to accommodate the use of the PolyCyano UV one-stage chemical staining process.
Exclusive to Foster + Freeman outside of Japan, PolyCyano UV dramatically reduces fingerprint processing times by combining cyanoacrylate monomer with a fluorescent stain in a one-stage fuming process inside the cabinet.
Whilst standard Ethyl-2 Cyanoacrylate evaporates at 120°C PolyCyano UV requires further heating to 230°C. To achieve this increased evaporation temperature all Foster + Freeman MVC Cabinets now feature a dual-temperature heating unit, while older cabinets can be upgraded in the field.
Once evidence has been treated with PolyCyano UV, fingerprints can be seen to fluoresce brightly under appropriate illumination; Crime-lites are ideal for such examinations.