Dispensaries turn to Arizona labs to test marijuana purity – Prescott Daily Courier

Prescott Daily Courier Dispensaries turn to Arizona labs to test marijuana purity Prescott Daily Courier Cottrell, 42, and his company, AZ Med Testing, is one of a number of labs in the state that cater to the burgeoning medicalmarijuana industry. The lab, located in a small office complex in north-central Phoenix, works with about a third of the state's … and more

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