alt Hacker NewsTake it outside, as long as it measures 400-450 it's probably good.
Metrology calibration is necessary if you want accuracy better than 10%, but most of us don't care at all about that, instead we care about increments of 200ppm or more.
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ShinyLeftPad • yesterday at 2:45 PM
Local factors can make your CO2 fluctuate by 200ppm. If you're near a busy road with not a lot of wind 600 ppm is possible. But it's not that important if you open your window at 1000 ppm or 1200 ppm.
Haha yes. 400-450ppm is fine. We’re doing just fine here. Everything is okay.
https://www.co2levels.org/