[#item_full_content] A professor in the US developed a 3Dprinted marijuana breathalyser to identify cannabisrelated road impairment. The device uses ‘Fast Blue’ dye cartridges to detect delta9 THC, CBD and CBN, compounds found in marijuana, with THC being responsible for causing the high. The device was found to successfully identify the difference between delta9 THC and CBD based on specific colours. 
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US scientist develops 3D-printed marijuana breathalyser | The study was funded by US’ Justice Department
ByPot Shop News
April 11, 2026