These fingerprint
developing pouches are an easy to use one-part fuming
system. Each peel-open pouch contains CA in a gel form.
Immediately before use we separated both sides to allow the
CA to evaporate inside cardboard box at room temperature.
A container filled with water was also placed into the chamber
to increase humidity and accelerate the polarisation of CA on
fingerprint traces. During the procedure the quality of developed
finger marks was checked every thirty minutes. On average
the procedure of developing fingerprint traces in the
chamber lasts approx. two hours.