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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.
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Exploiting the IR fluorescent properties of plants and minerals
When seeking materials that would fluoresce in the IR, we initially took inspiration from nature, testing a wide variety of minerals and plant based powders for suitability. Excellent results were achieved using a modified blend of cyanophyta and a bright blue mineral pigment known as Egyptian Blue.
fpNATURAL® 1, a plant based fluorescent powder
Cyanophyta or cyanobacteria is a phylum of bacteria that gains its name through its blue/green colour. Often referred to as blue-green algae, there are approximately 2000 species of cyanophyta, the perfect blend of which meets all the requirements to produce an ideal IR fingerprint powder:
fpNATURAL® 2, a mineral pigment based fluorescent powder
Egyptian Blue, also known as calcium copper silicate or cuprorivaite, is best known for its use in ancient Egyptian artwork found on statues, tomb paintings and sarcophagi. A bright blue powder, when viewed in the visible spectrum, Egyptian Blue exhibits strong Near-Infrared fluorescence when illuminated with either Visible or Near-Infrared light. The fpNATURAL® 2 blend of Egyptian Blue offers unique advantages to the fingerprint examiner:
Entry-level and advanced IR Imaging Kits for the crime scene and forensic laboratory
fpNATURAL®1 Imaging Kits
fpNatural 1 is stimulated using 'visible' illumination in the blue or red wavebands and emits 'invisible' infrared fluorescence
Standard Imaging Kit
Dual wavelength light source & filter |
Advanced Imaging Kit
Crime-lite 82S light sources and filters |
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Kit includes:
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Kit includes:
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Order Code: QCL/FP1/L/S/KIT |
Order Code: QCL/FP1/L/A/KIT |
fpNATURAL®1 Imaging Kits
fpNatural 1 is stimulated using 'visible' illumination in the blue or red wavebands and emits 'invisible' infrared fluorescence
Standard Imaging Kit
Crime-lite 82S 780nm light source & filter |
Advanced Imaging Kit
Crime-lite 82S light sources and filters |
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Kit includes:
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Kit includes:
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Order Code: QCL/FP2/L/S/KIT |
Order Code: QCL/FP2/L/A/KIT |
Visualisation and Image Capture kits
IR fluorescence emitted by fpNAtural powders is not visible to the naked eye and can only be viewed via an IR sensitive camera.
Standard Camera Kit
built around the Fujifilm XT-1 IR |
Advanced Camera Kit
built around the Nikon D810 |
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Pro-grade UV-Vis-IR camera providing high image quality and detail across the spectral range
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High specification DSLR camera custom modified to enable full UV-Vis-IR imaging.
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Order Code: QCL/FP/FUJICAM/KIT |
Order Code: QCL/FP/NIKCAM/KIT |
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