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15 votes
Name two different types of fingerprint developing powders, when each is used, and the type of surface it is used on.

User Dombi Bence
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1 Answer

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19 votes

Answer: Regular Powder: Regular powder differs from magnetic powders in the respect that magnetic powders contain iron and they adhere to a magnet. Regular powder can be applied with success on such surfaces as windows, televisions, kitchen counter tops, table tops, painted surfaces, cabinets and many other surfaces found in residential and commercial settings, and it is quite effective in dustings on apprehended or stolen vehicle. AND Magnetic Powder: Magnetic powders are best applied to shiny surfaces, such as plastic containers. When dusting for fingerprints with magnetic powder, crime scene investigators must use a magnetic applicator which has a magnet. Magnetic powder is applied with a light hand with brushing strokes. Besides being available in the colors of black, white, silver/gray and biochromatic, magnetic powder is also available in fluorescent magnetic powder colors like red and green. These can be used when dealing with problematic background fluorescence, and they are best applied with feather duster

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User Mafafu
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