What if you could test for cocaine, opioids and marijuana as quickly as a breathalyzer identifies alcohol? A new, low-cost chemical sensing chip brings us one step closer to this portable tech, which has long been on the wish list of police officers and others looking to monitor drug use and curb dangerous driving.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2018/05/180507111818.htm
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