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I have two of these running right now. According to my air quality meter, PM 2.5 has fallen from about ~250 indoors to ~40. (My meter shows ~600 outside, which
by ALittleLight 6y ago
I have two of these running right now. According to my air quality meter, PM 2.5 has fallen from about ~250 indoors to ~40. (My meter shows ~600 outside, which is about 3x what the government website shows for my area)
- meristem 6y agoGovernment website most likely using an algorithm that pools data and takes into consideration multiple readings, sometimes lagging by a few hours. Your sensor gives the instant value in your immediate environment (assuming it is well-calibrated and installed outside of local influences such as kitchen fans, dryer lint etc etc)
- koolba 6y agoWhat do you use to measure air quality?
- ALittleLight 6y agoI use this thing: https://www.amazon.com/gp/aw/d/B0787Z5DK9 https://www.amazon.com/gp/aw/d/B0787Z5DK9 I'm not sure how accurate it is or isn't. It reacts to the filters, for example, or if I hold it in front of the filter it'll reach a very low number, conversely if I take it to other parts of the house or outside it'll increase. I've done a few trials like that and it seems directionally accurate, but I can't speak to the numerical accuracy. It measures PM 2.5 and 10 and has a button to show graphs over time for ~12 hours. Battery life is pretty good, I usually leave it detecting on the charger, but I've had it in handheld mode for several hours and stayed above 80%. It's super simple to use. One thing I don't like about it is that it has a cheap plastic hinge that is supposed to let it stand up, but it broke on me after a couple uses. It doesn't seem to matter though if it's standing up or laying down, it still reads pretty much the same. I wish it had a way to export data to my computer or maybe an app.