The definitions of VOCs utilized for control of precursors of photochemical smog employed by the U.S. Environmental Defense Agency (EPA) and state businesses within the US with impartial outside air air pollution rules incorporate exemptions for VOCs which are established being non-reactive, or of small-reactivity within the smog formation method. https://jasperzglqs.ampblogs.com/The-Ultimate-Guide-To-VOC-TEST-48458046