When the surface is
Nonabsorbant(2 methods):
-Black powder-black carbon or charcoal for light sufaces
-Gray powder-aluminum dust for dark sufaces.
Porous(3 methods):
-Iodine fuming (has the ability to sublime)
-3% solution of silver nitrate
-0.6% ninhydrin powder dissolved in acetone or ethyl alcohol.
Hard(2 methods):
-Black powder-black carbon or charcoal for light sufaces
-Gray powder-aluminum dust for dark sufaces.
Smooth(3 methods):
-Iodine fuming (has the ability to sublime)
-3% solution of silver nitrate
-0.6% ninhydrin powder dissolved in acetone or ethyl alcohol.
The previous information was derived from:
http://www.bxscience.edu/publications/forensics/articles/fingerprinting/f-fing03.htm
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I like it how you were very descriptive about the Iodine fuming because I've heard of silver nitrate, and ninhydrin being used to develop fingerprints but I didn't know that they could be mixed.
ReplyDeleteWell I wasn't really saying they could be mixed; i was just listing different methods briefly. I don't belive they can be mixed. I'll change that...
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