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Home - Disputed Handwriting - Science of Fingerprints

Articles from The Science Of Fingerprints

Classification Of Amputations And Fingers Missing At Birth

Permanent Disabilities

Searching

Radial And Ulnar Loops

Record Of Additional Arrest

Illegible Inked Prints

Name Files

Technical Consideration

General

Establishment Of A Local Fingerprint Identification Bureau


Drying The Fingers





In many instances it will be found that the outer skin is gone and the
fingers themselves are saturated with water. A quick method of drying
out the fingers is to place them in full strength acetone for
approximately 30 minutes. The fingers are then placed in xylene for
about an hour or until the xylene has overcome the reaction of the
acetone. After removal from the xylene the fingers should be placed on
a blotter until the surface of the fingers appears dry. They are then
ready to be inked and printed.

It will be noted in this procedure that when the fingers are removed
from the acetone they dry and harden in a matter of seconds. The
purpose of the xylene is to resoften the fingers. After this
treatment, should the resulting inked impressions be unsuitable for
classification purposes, the ridge detail should be photographed.





Next: X-ray Photography

Previous: Water-soaked Fingers



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