CO2 level in the room

• The concentration of carbon dioxide (CO₂) in the room is a very important indicator of the microclimate. It is measured in parts per million or “ppm”.
• The CO₂ level in the room should not exceed 800 ppm above the outdoor air CO₂, which is 350-400 ppm.
• A CO₂ concentration of up to 1000 ppm is considered to be acceptable air quality.
• Beyond this value, oxygen is reduced in the room causing people feel tiredness, drowsiness and even headache.

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