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  • 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.

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

How marijuana cookies led to a valuable device

November 24, 2017 03:55 AM

UPDATED November 24, 2017 02:10 PM

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More Videos

Dramatic, close-up footage of Southern California wildfire battle 1:20

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