|Silicone rubber compounds for fingerprint lifting
Certain surfaces have such a texture that even with gelatin lifters, it is
hard to lift powdered fingerprints in their entirety. Examples are: Hammerite
painted coin boxes and polystyrene packaging material. In these cases, white or
black silicone rubber casting compound can be used. The casting compound is mixed
with hardener and diluant (if needed) and poured over the print developed with
fingerprint powder. After the silicone rubber has cured, the fingerprint is lifted.
Depending on the color of the fingerprint powder that was used, white or black silicone rubber is used for contrast. The white rubber has been formulated in such a way that backlighting of the cast is still possible.
Cat. No. C-1400
SILMARK, white, 150 g in tube, with paste hardener
Cat. No. C-2100
SILMARK, black, 150 g in tube, with paste hardener
Cat. No. C-7200
Hardener for SILMARK, 20 g paste in a tube
Cat. No. C-4000
Drop-bottle (glass) with SILMARK diluant, 10 ml
Cat. No. C-5000
Bottle (polyethylene) with SILMARK diluant, 100 ml
Top three pictures: Fingerprint on polystyrene packaging material after dusting with Magnetic Jet Black powder and then lifted with white Silmark casting compound.