Find_a_Reason_tTaP t1_itp2857 wrote
Reply to comment by amateurneuron in Customs agents have a device where you put a substance on a small metal plate and it tells you exactly what it is (like cocaine etc). How does this work and how accurate is it? by Weird-Vagina-Beard
It would be able to say with fair certainty that it is not a known explosive or drug due to wavelengths that are missing though in the case of unknown items.
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