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A comment on Indoor CO2 may reach levels harmful to cognition by the end of this century. Parent comment

Re:Indoor CO2 may reach levels harmful to cognition by the e... by gsich on Saturday September 19, 2020 @10:17AM (#24527588)
Even your unit has a trivial calibration. But in most cases you only need relative not absolute accuracy.
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Re:Indoor CO2 may reach levels harmful to cognition by the e... by MichaelZuo on Saturday September 19, 2020 @12:14PM (#24528450)
Yes, that’s the limitation of current technology. thankfully it’s doable with only a few minutes of attention and no tools or specialized requirements.

1000 ppm is an absolute limit, the vast majority of the population will experience measurable effects above this threshold. And it’s surprising how often that’s exceeded in normal everyday environments.

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