To test drivers for alcohol consumption, we have the breathalyzer. It’s fast, reliable, portable and inexpensive, but it will not work for cannabis.
The idea of a mechanism to measure the alcohol a person has consumed dates back quite far.
The term “alcohol” to a chemist means an organic compound that contains an OH group, but as far as the public is concerned “alcohol” refers to one specific compound, namely, ethanol. It is ethanol...
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