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Ventilation

It is of the utmost importance that the ventilation of buildings is managed in line with the recommendations. The higher the CO2 concentration, the higher the concentration of aerosols (microdroplets produced by breathing) that may contain microorganisms, bacteria and viruses. A lack of ventilation in enclosed spaces promotes the spread of these substances. Ventilating and airing therefore help to reduce airborne transmission.

That is the reason why the use of a CO2 meter is recommended in rooms where members of the public are present. The CO2 content of the air should, ideally, not be greater than 900 ppm and should in no case exceed the standard of 1200 ppm. If the CO2 concentration exceeds the threshold of 900 ppm, an efficient air ventilation system is strongly recommended.

A CO2 meter measures the CO2 concentration in a given space. Using this type of meter helps protect the population from the risks of contamination resulting from poor indoor air quality.

Obligations for manufacturers of CO2 meters

Manufacturers may only market CO2 meters that fulfil specific technical criteria and conditions of use set out in a new ministerial decree.
Only CO2 meters that fulfil all of these criteria are allowed to carry the designation “appareil utilisable dans le cadre de la lutte contre le SARS-CoV-2” or “apparaat voor gebruik in de strijd tegen SARS-CoV-2” (device for use in the fight against SARS-CoV-2). This must be stated directly on the device, on the packaging or in the technical manual.

Follow the basic rules

The Superior Health Council recommends airing and ventilation to limit the airborne transmission of COVID-19 in public spaces. The Council also emphasizes that no ventilation or air cleaning device currently on the market can guarantee completely virus-free air. Respecting the basic rules, such as wearing a mask and keeping the necessary distance, therefore continues to be necessary at all times.

For further information

Annexes