Looked into this a while ago and I seem to recall 1000-2000ppm is “very stuffy office” territory.
(At one point I worked in a really terrible office and was considering trying to measure it somehow)
Looked into this a while ago and I seem to recall 1000-2000ppm is “very stuffy office” territory.
(At one point I worked in a really terrible office and was considering trying to measure it somehow)