How to Measure CO2 Application Note - Vaisala
350 - 450 ppm Typical atmospheric concentration 600 - 800 ppm Acceptable indoor air quality 1,000 ppm Tolerable indoor air quality 5,000 ppm Average exposure limit over 8-hour period 6,000 - 30,000 ppm Concern, short exposure only 3 - 8% Increased respiration rate, headache > 10% Nausea, vomiting, unconsciousness > 20% Rapid unconsciousness, death
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