CO ² LEVEL:
CO ² level
250 – 350ppm
350–1000ppm
1000–2000ppm
2000–5000ppm
above 5000ppm
Status
Description
Outside
Normal outdoor air level.
Well ventilated, Ideal Typical level indoors with good ventilation. 1000 ppm =
Recommended maximum level in a closed room. Considered
maximum comfort level in many countries.
Under ventilated
Poor air quality - requires ventilation.
General drowsiness, discomfort and odors.
Very poorly
Danger! You may experience severe headaches, vomiting/
ventilated
nausea, and dizziness within 20 minutes.
Totally unacceptable
Danger! Headache and dizziness in 5 to 10 minutes.
Increased risk for health damage by prolonged exposure.
EN
21