CHESAPEAKE BAY DIVISION - IAI
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Electrostatic Lifting

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Development Color:
Picture
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Method to Record:
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Hazard:
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Protective Clothing: 
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 Fume Hood Use:
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Formula
Procedure of Application
Development Complete When
Source of Error
Incompatibilities
Precautions
Storage Container
Safety
Recommendations
Sequential Reagent
Formula
Not applicable.​









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Procedure of Application
  1. Place the lifting film over the surface bearing the dust impression.
  2. Place the grounding device adjacent to the lifting film.
  3. Charge the lifting film with the charger unit.
  4. The dust impression is transferred to the lifting film by the electrostatic charges.
  5. Carefully remove the lifting film from the surface.
  6. View the lifted result using white oblique light.
  7. Photograph opaque lifting films using white oblique light.
  8. Photograph transparent lifting films using transmitted light or dark field lighting methods.

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Development Complete When
The lifting film is viewed under white oblique light to observe for dust impression detail.




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Source of Error
Electrostatic lifting devices do not work on wet or moist surfaces.

A good ground connection is necessary for proper performance.



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Incompatibilities
Extremely dusty underlying surfaces.

The device cannot be operated in wet or very moist conditions.










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Precautions
Be sure to let electrostatic charges dissipate before attempting to remove the lifting film.

The dust impression on the lifting film is 'mirror-reversed', and may need to be photographically reversed before comparisons.



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Storage Container
Lifting films can be stored in cardboard boxes.












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Safety
Be certain not to handle or touch the charging probes when the device is in operation.

Electric shocks can occur when recovering dust impressions from metal surfaces.





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Recommendations
View the lifted impressions using oblique white light in a darkened room.

Re-charge the charger unit on a regular schedule.




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Sequential Reagent
Not Necessarily in this Order:
  • Iodine Fuming
  • Electrostatic Lifting
  • Ultra-Violet Light
  • Visual Examination
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Chemical Name
Electrostatic Lifting

​Surface Used On
Dry Porous & Non-Porous Surfaces
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Sensitive To
Dust Impressions
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Ridge Detail Visualized by:
Electrostatically recovered impressions

Reagent Applicabilities:
Non-Destructive
Dust impressions
Porous sufaces
Non-Porous surfaces


Other Chemical Name(s):
Electrostatic Dust Print Lifter
Electrostatic Dust Mark Lifting Device
Dustmark Electrostatic Lifting Kit
D.E.L.K.
Dustprint Lifter. 

Process Summary:
A non-destructive process whereby an electric field is developed on a sheet of lifting film which attracts dust particles to the film. The device is capable of recovering dust impressions from a variety of porous and non-porous surfaces. Dust impressions not visible to the naked eye are often recovered with this device. 

Accepted Deviations:
Numerous electrostatic lifting devices are available. Both ridge detail and footwear impressions may be recovered with this device. Both the "ESDA" and "Electrostatic Vacuum Box" can be utilized to recover dust impressions. 

Supporting Reference Materials:
  1. Advances in Fingeprint Technology 2nd. Ed., Lee, H.C. & Gaensslen, R.E., CRC Press, Boca Raton, FL., 2001.
  2. Manual of Fingerprint Development Techniques 2nd. Ed., Home Office - Police Scientific Development Branch, White Crescent Press, Ltd., Luton, England, 2001.
  3. Technical Notes, Lightning Powder Co. Inc., Salem, OR., 2001.

Address
Chesapeake Bay Division - International Association for Identification   

P.O. Box 71804, 
Henrico, VA 23255
Email
cbdiaisec@gmail.com
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  • Home
  • About Us
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  • Seminars
  • Webinars
  • Students
  • Resources
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  • ACE-V Methodology