There's some background information about what sensors are used in a recent reddit thread (it's about triggering an alert by farting, but the good content is al

There's some background information about what sensors are used in a recent reddit thread (it's about triggering an alert by farting, but the good content is always in the comments). It left me with the impression even the Dyson product is home use, not accurate scientific use. https://www.reddit.com/r/videos/comments/edsf4b/dyson_air_purifier_immediately_registering_my/fbkuxjt/ https://www.reddit.com/r/videos/comments/edsf4b/dyson_air_pu... "So I'm one of those fancy hazmat dudes with the EPA (On-Scene Coordinator). This thing isn't reading VOCs. You need a photo ionization detector for that. And methane, the primary compound in farts, can't be read by the majority of PIDs. They usually are 10.6 eV lamps. Methane has a ionization potential of 12.6. What's required to read it would literally burn out when in contact with oxygen within a month, if not sooner. To properly read it you need a flame ionization detector. This uses hydrogen to break about carbon-hydrogen bonds and has a equivalent to a 15.6 eV lamp. They also cost over 12 grand."