How potent is that brownie? There's an app for that

Peichen Chang of Engineered Medical Technologies demonstrates a device called a tCheck which measures the level of cannabinoids, such as THC.
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Peichen Chang of Engineered Medical Technologies demonstrates a device called a tCheck which measures the level of cannabinoids, such as THC.

Public safety agencies launch drugged driving campaign in advance of legalized marijuana

December 27, 2017 04:42 PM