paraffin test

paraffin test
noun
: a test in which a paraffin cast of the hand of a person suspected of firing a gun is subjected to chemical analysis to determine the presence of powder particles

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paraffin test noun
A test using paraffin to detect trace elements left on the skin of someone who has been in contact with explosives, etc
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Main Entry:paraffin

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paraffin test,
a measurement of the amount of gunpowder nitrates contained in a paraffin mold of a person's hand. It is used in criminology to determine whether or not a suspect has recently fired a gun. »

Evidence has long been accumulating which shows that the standard “paraffin test”…is unreliable (New Scientist).


Useful english dictionary. 2012.

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