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Black Wetwop, 250ml

SKU: 1-0077
Your Price $64.50
Quantity
 

Wetwop - Black 250 ml

  • Model: 1-0077
  • SKU: 1003885

Wetwop is a pre-mixed liquid that produces excellent friction ridge detail when used to develop prints on any adhesive surface such as masking, duct, clear, cellophane, brown packaging and nylon reinforced tape.

Background:
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.

Safety:
As with any new chemical process, read and understand the Material Safety Data Sheet on all the chemicals involved. Practice normal industrial hygienic procedures of wearing lab coats, protective gloves, and goggles, if there is any risk of splashing the solution into the eyes.

Equipment:
Wetwop is applied to the adhesive side of tapes with a camel-hair brush.

Components:
Wetwop is a ready-to-use suspension, no mixing or additives needed.


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 (due to poor contrast)

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

Examination:
A visual examination of the evidence should be conducted prior to any chemical processing. Any foreign material should be collected in accordance to laboratory procedures. If the tape is wadded or stuck on another surface, efforts should be made to remove and expose the adhesive surface without destroying the adhesive side. Once that is accomplished, a second visual examination should be conducted. Any evidence of ridge detail should be photographed prior to processing. To process the tape, shake the bottle thoroughly. Pour a small amount in a clean beaker or dish. Using a small camel-hair brush, apply Wetwop to the adhesive side of the tape with a painting action. Completely cover the surface. Let the solution sit on the tape for about 15- 30 seconds. Rinse the solution off the tape with a gentle stream of tap water. Once the tape is rinsed, set aside and allow to air dry. Do a visual examination and photograph the results.

Photography:
Photography of latent prints developed with Wetwop should not pose any problems.

TECHNICAL NOTES:
Some paper labels and tapes and labels with dried-out adhesives Some contact papers or shelf papers Wetwop – Black was developed to process the adhesive surfaces of all colors. The solution will stain the residues of the fingerprint deposited on the adhesive surface. The solution has little background staining.

Ordering Information:
1-0271 …………  Black Wetwop, 100ml
1-0272 ………  White Wetwop, 100ml
1-0077…… Black Wetwop, 250ml
1-0078…………… White Wetwop, 250ml
FS-BRC1.5……  Camel-hair Brush

Ships within 14 days. Special order items may take longer.

Any questions call 714-979-1405 or email us at Sales@HittMarking.com

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