Lightning Powder Wetwop Black / White

Wetwop

For developing latent prints on the adhesive side of tape. Wetwop is a pre-mixed, thick black or white liquid that is applied to the surface with a camelhair brush. It can be used to develop prints from masking, duct, clear, cellphone, brown packaging and nylon reinforced strapping tapes. Wetwop is pre-mixed. Simply shake, apply to the surface and gently rinse with tap water.

Excellent friction ridge detail results indefinite shelf life applies easily with a camelhair brush

Technical Note:

• Wetwop – Black/White
• Wetwop – Black
• Wetwop – White

Introduction:

Wetwop is used to process the sticky-side of adhesive tapes and labels for latent prints. As with any chemical process, we suggest that you experiment on non-evidence items to become familiar with this process before using it on evidence.

Wetwop can be used on the following adhesive surfaces:

• Duct tape
• Adhesive bandages
• Paper-backed labels
• Masking tape
• Plastic surgical tape
• Clear plastic tape
• Packing labels
• Double-sided foam tape
• Reinforced packing tape
• Cloth surgical tape
• Adhesive edge of 3M Post-it notes
• Frosted plastic tape
• Black electrical tape
• Some paper labels and tapes and labels with dried-out adhesive
• Some contact papers or shelf papers

Wetwop – Black was developed to process the adhesive surfaces of most colors. The solution will stain the residues of the fingerprint deposited on the adhesive surface. The solution has little background staining.

Wetwop – White was developed to process dark colored and clear adhesive surfaces. The solution will stain the residues of the fingerprint deposited on the adhesive surface.

In some instances, both black and white solutions can be used in sequence to present a contrast for better visualization of the prints.