Polilight Flare Plus 2 manual –
16
LIGHT APPLICATIONS
Option 4: Superglue Fuming
An alternative to powder treatment is superglue fuming with Cyanoacrylate. In a serious crime, it
is recommended that the area of interest be sealed with a plastic tent for superglue fuming. After
superglue application, the area is searched for latent fingerprints using white light from Polilight on
low intensity. Very often blue 450 nm or green 530 nm bands offer good results.
In cases where the detected fingerprint is barely visible to the eye, enhancement of the superglue
developed latent should be carried out. This can be achieved using conventional powders or fluorescent
powders, remembering that fluorescent powders are of much greater sensitivity.
The best results are obtained using fluorescent stains such as rhodamine 6G, Basic yellow 40, Ardox
and RAM, provided that the material does not absorb the stain as well.
In the example shown in Figure 6, the view under daylight conditions is on the left and the view when
illuminated with Polilight ultraviolet (UV) or 450 nm and viewed through a 530 nm BP filter is on the right.
Figure 6. Adrox Treated Fingerprints
When rhodamine 6G is used for staining, the green 530 nm band is recommended, in conjunction with
amber goggles. For photographing, the 590 nm barrier filter is recommended, or you can use the blue
505 nm band with the 565 nm barrier filter.
In the example shown in Figure 7, the view under daylight conditions is on the left and the view when
illuminated with Polilight 505 viewed through a 565 nm filter is on the right.
Figure 7. Rhodamine Treated Fingerprints
