juniorvasquez1 juniorvasquez1

24-05-2018
Chemistry

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If a fingerprint is discovered on a dark service, what color fingerprint powder might be used?

A. Blue
B. Black
C. Red
D. Grey

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vinyl50098 vinyl50098

24-05-2018

Black and Grey both work but Black is the most popular choice to get the greatest contrast between the print and a white surface

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