Assuming that all conditions are perfect and you can get high-quality data from either one.
Which one would I use...
- If I live alongside a highway and want to know - generally - what's in the air?
- If I live alongside the highway and want to know - specifically - when it's safe to go outside?
- If I live near an industrial facility and want to record combustion particles at a particular time?
- If I don't care about time and want to measure particle size and shape?
Hi there! This wiki page has a lot of information on it about the differences between passive and optical particulate matter monitors. https://publiclab.org/wiki/pm-monitoring
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