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$23.95
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Lightning Gelatin Lifters
Gelatin lifters are high-quality elastic sheets of rubber with a low adhesive gelatin layer on one side. The advantage of using rubber-gelatin lifters is their elasticity and low tack. The low tack will pick up the dust from the shoe print on a paper box, for example, but not tear the paper from the box. Because of their elasticity, rubber lifters can be used to pick up latent prints on uneven or curved surfaces, such as light bulbs, door knobs or stucco.
The data about the location of the latent print or shoe print, the case number, date and your initials can be written on the back of the lifters using a regular ballpoint pen. The black rubber-gelatin lifters are white on the back for writing purposes.
Lifted shoe prints (dust marks) may slowly fade in time. For very weak prints this may be noticeable after storing for a few days. This will depend on temperature. The lower the temperature, the slower the fading. This, however, should not be a concern, since lifted shoe prints can easily be photographed after removing the cover sheet. Oblique lighting will show details not visible before photographing.
Lifters are normally stored at room temperature (20° C, 68° F), though storage in a refrigerator is advantageous. While black and white lifters have no specific shelf life, it is best to not keep more than a six-month to one-year supply in stock. Over time, the transparent lifters slowly develop a brown tint. This is due to a chemical reaction between the gelatin and the ingredients added to give the transparent lifters a higher tack than white and black lifters. It becomes noticeable after a number of months storing at room temperature. Therefore, it is preferable to store the transparent lifters in a refrigerator. Upon prolonged storage, especially in a humid environment, the lifters will attract some water, resulting in a small loss of tack. Although this does not render the lifters unusable, storing in a humid atmosphere should be avoided.
Rubber-gelatin lifters are available in three colors and two sizes: 5.2" x 7.2" and 5.2" x 14.4". The larger size can be used for footprints or footwear impressions in dust. The smaller size can be used for palm prints or cut into smaller sizes for one or more fingerprint lifts. Each pack is wrapped in foil to keep the lifters clean. For more information about Rubber-gelatin lifters, please view our See
Tech Notes.
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