Labconco CAptureTMPortable Fuming System 3420024 User Manual
Page 8
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The CApture operates using the following principles:
• CA polymerization.
• Generation of CA fumes through controlled heating.
• Removal of CA droplets and fumes by a two stage filter.
The major components in the system are:
• The clear chamber
• The controller and heater.
• The two stage filter.
• The blower to force air through the system.
CA polymerization
Cyanoacrylate is the generic name for fast-acting adhesives such as methyl 2-
cyanoacrylate or ethyl-2-cyanoacrylate. CA adhesives are sometimes known
as "instant glues." CA is an acrylic resin which rapidly polymerizes in the
presence of water (specifically hydroxide ions), forming long, strong chains,
joining the bonded surfaces together. CA is a tenacious adhesive, particularly
when used to bond non-porous materials or those that contain minute traces
of water. It is also very good at bonding body tissue, and this can be a
bothersome (or even dangerous) side effect during everyday use.
Cyanoacrylate is used as a forensic tool to capture latent fingerprints on non-
porous surfaces such as glass, plastic, etc. The cyanoacrylate fuming method
(often called the super glue method) heats the CA to produce fumes which
react with amino acids, fatty acids, and proteins in the latent fingerprint and
the moisture in the air to produce a visible, sticky white polymer