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November 15, 2019 at 1:46 pm #6851
uRADMonitor
Keymaster

Well there is a curve that shows resistance to alcohol ppm equivalence here: https://www.uradmonitor.com/metal-oxide-voc-sensors/

But please understand that VOC means a mixture of substances and you cannot compute a generic VOC ppm due to the unknown nature of this mixture. Best you can do is to estimate carbon concentration or do equivalence to various substances such as alcohol. In my opinion it is not worth it as it doesn’t bring any new information, you’ll see the same graph shape, only the figures will be different as your approximation function will be linear. You already have the “VOC-AQI” for that.