BVDA America Inc.
  Home » Shoeprints » Gellifters Your Account  |  Cart Contents  |  Checkout   
Categories
Fingerprints »
Shoeprints »
  Gellifters
  Tools
Toolmarks »
Blood reagents
Search
 
Use keywords to find the product you are looking for.
Advanced Search
Product information
5-MTN
Gellifters
GLScan
Shoeprint searching
Acid Yellow 7
ThermaNin
Information
Terms & Conditions
Privacy Notice
Contact Us
Products in this section Products in this section

Gellifters

For the lifting of footwear impressions (made with dust or dirt) no material is better suited than black gelatin lifters, due to its low tack. Whereas synthetic materials with a high tack tend to lock in air bubbles upon application, a black gelatin lifter easily lifts a complete print without disturbing the surface on which the print is found.
Furthermore, the high-gloss black gelatin layer absorbs light so strongly that it can be over-exposed many times. When a black object, next to the lifter, shows up white on a photograph, the lifter is still dark gray. Its light absorption enables photographing of even very faint impressions.

Apart from being available in several sizes, the (black and white) lifters are also available with different backing materials: rubber (on which notes are easily made) and polyester (a little less flexible). The shoeprint sizes are either 5.2" (13 cm) or 7.2" (18 cm) wide and 14.4" (36 cm) long. Also available are sheets of 14.2 x 17.7 inch (36 x 45 cm).
In some countries, transparent lifters are used for lifting footwear impressions. These are then photographed with a dark-field method.

White gelatin lifters are not intended for the lifting of footwear impressions in dust (black lifters give a much better contrast) but are well suited for the lifting of prints in blood (finger- or shoeprints) that have been stained with protein dyes, such as Amido Black or Hungarian Red. For an example see this (pop-up window).

Also, shoeprints made with muddy shoes on non-absorbing surfaces, which have been stained with an aqueous solution of Safranine O (1 g/liter), can be lifted with white gelatin lifters. The fluorescence of Safranine O (using green light and red camera filter) is then photographed (poster of M.J.M. Velders at the IAI conference in Danvers/MA/USA; 1997).

All gelatin lifters are packaged in sealed envelopes made of a laminate material. This material protects the gelatin layer against moisture. Thus the tack is retained, even after prolonged storage.

For prices and ordering see the next page.

Shopping Cart more
0 items
Brochure
Gellifter brochure (5.5 MB)
Gellifter brochure
Order Form
BVDA Order Form April 2019
Download order form
Copyright © 2019 BVDA America Inc.
Powered by osCommerce