Crystal Violet Latent Print Protein Stain is a simple and effective protein stain used to enhance prints on the sticky side of tape and items that are oily or greasy. It is important that any biological evidence such as semen, urine, or blood, as well as any trace evidence, has been collected before use. Crystal Violet can be used on duct tape, masking tape, clear plastic tape, surgical tape, black electrical tape, and other tapes. It should not be used on surfaces that contain a water-soluble adhesive. Because Crystal Violet is a protein stain, it can also be used to enhance bloody prints.
If the item is black or dark colored, such as electrical tape, making it difficult to see developed prints, it is advised to use our Crystal Violet Latent Print Fluorescent Protein Stain instead of the original formula.
The Crystal Violet Latent Print Protein Stain is applied by submerging the item into the solution. The item would then be rinsed in our Rinse/Destain and air-dried. The item should be photographed to record the developed prints. If using our Fluorescent Protein Stain, the item should be viewed using a forensic light source before photographing.
Choose from a liter bottle of Premixed Crystal Violet Latent Print Protein Stain (Reorder No. CHE-3108) or Crystal Violet Latent Print Fluorescent Protein Stain (Reorder No. CHE-3109). Our Crystal Violet Latent Print Protein Stain Concentrate (Reorder No. CHE-3107) is offered in a box of 6 vials. A liter bottle of Crystal Violet Rinse/Destain is also available (Reorder No. CHE-3158).
Note: Though not usual, our dyes and stains, depending on the quantity ordered, may require an additional hazardous shipping charge be added. We will contact you if this is the case.