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Hard Evidence™ Pouches are easy to use in the laboratory or in the field to develop latent prints. They can be used inside of vehicles or inside of tents of plastic material covering furniture, bicycles, bodies or other items too large for the regular chamber.
The Hard Evidence™ pouches have the advantage of ease of use whether in the lab or when processing crime scenes or bodies. Simply peel one open and attach it to the inside of the chamber or tent. Also place a cup of warm water inside to add humidity to the chamber. Allow the fumes to work for about ten to fifteen minutes and check the progress. A suggested method is to observe a black card placed inside for the development of latent prints. If prints have developed, stop the processing by taking the pouch out and sealing it. Allow the chamber to air out. A pouch can be used for about 10–15 hours of fuming when sealed with tape and kept in a sealed plastic bag between uses. For more information on the Glue Fuming process, please view our Technical Notes below.
Store unused pouches in the refrigerator to prolong their shelf life. Since the shelf life is one year, it is wise to only purchase the quantity of pouches that will be used up in that time.
