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What type of powder is used on which type of surfaces to find fingerprints?
Wiki User
∙ 13y ago
Answer:
There are several different types and their use depends upon the surfaces and conditions. Two commonly used ones are: Carbon Black, and a powder made of very finely ground metal filings.
Answer:
Wikipedia indicates the following powders can be used (differnet colored powders are required to show prints in different colored surfaces)
White
- Haddonite White (titanium dioxide 4 parts, kaolin 1part, French chalk 1 part or titanium dioxide 60%, purified talc 20%, kadin lenis (light) 20%).
- Lanconide (zinc sulfide 4 parts, zinc oxide 4 parts, barium sulfate 4 parts, titanium dioxide 4 parts, bismuth oxychloride, 4 parts, calcium carbonate 1 part)
- Mercury-chalk (hydrargyrum-cum-creta) now no longer used, as it represents a serious health risk.
- Titanium dioxide
- White tempera (starch, titanium dioxide)
- Chalk
Black
- Charcoal
- Graphite
- Dactyl black (Graphite, lampblack, gum acacia)
- Dragon's blood (powdered resin of the Daemonorops Draco plant)
- Haddonite black (lampblack 70%, graphite 20%, powdered acacia 10%)
- Lampblack
- Photocopier toners
Other
- Aluminium powder
- Metal powders
- Lycopodium
- Magnetic powders
- Fluorescent powders
- Anthracene
Wiki User
∙ 12y ago
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∙ 13y agoGraphite.
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