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The CA Process /

Fingermark evidence is a common evidence type for a wide range of offences and their timely identification is key to their success in the investigation and detection of crime.

Cyanoacrylate (superglue) fuming has been used for latent fingermark development on a range of non-porous and semi-porous substances since the 1970’s. It’s a low cost and highly effective development technique, requiring minimal user effort.

In a humid environment, vaporised liquid cyanoacrylate reacts with hydrated components present in fingermark residues, producing a white deposit. It is common practice to enhance this white deposit by staining with fluorescent dye.

The CApture BT Fuming Cabinet is specially designed for optimum cyanoacrylate fuming of exhibits for subsequent dye staining or for use with one-step fluorescent products, such as Lumicyano.

Non-porous substrates are exposed to cyanoacrylate vapour, which deposits (in the presence of humidity) on ridge residues, turning the fingermark white