Method of marking a product, marked product resulting thereof, and method of identifying same

Abstract From the Canadian patent

A method and means for identifying the authenticity and the genuine nature of a solid or liquid bulk material, by incorporating a marking composition containing at least one trace ion into the said bulk material whereby the , to~tal concentration of the incorporated trace ions in the market bulk material is chosen to be lower than the corresponding con~centration of the same ions in standard sea water. The authen~ticity and the genuine nature or the adulteration level of the marked bulk material can be tested in-the-field using electro~chemical sensors, and confirmed in the laboratory using a method such as atomic absorption spectroscopy ion chromatography or mass , spectrometry.