| 简介 |
FIELD : engineering of technical means for marking chemical substances, possible use for marking any substances.
SUBSTANCE : an admixture is introduced into substance being marked, of same chemical composition as substance, but with increased content of rare stable isotopes (carbon, oxygen, nitrogen, hydrogen) of several elements present in composition of substance being marked. Used as marking code is value of concentration of rare isotopes introduced to substance being marked.
EFFECT : creation of universal, safe to use marker, useable for reliable identification of any substances without affecting their consumer qualities.
3 cl |
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