5
times worse indoor air quality
90%
of our time we spend indoors
20.000
times a day we breathe
10.000
liters of air we breathe per day
How do you measure air quality?
Because pollutant sources causing polluted air are in most cases not visually perceptible - for reference, a fine particle is 1/30th of a human hair - a PM2.5 laser sensor is the most efficient way of measuring air quality. This sensor is built into Tube and Bright and measures the particulate matter in micrograms per cubic metre (µg/m³). If the value is between 0-20, the air quality in the room is excellent to good. With a value between 21-75, the air quality is moderately to moderately unhealthy. With a value between 76-999 the air quality is considered to be (very) unhealthy and in some cases even dangerous.

What do you notice about poor air quality?
Contrary to popular belief, polluted air is not only noticeable with asthma, allergies or hay fever. Health complaints such as tightness in the chest, dry skin, eyes or throat and headaches indicate that the air quality indoors is polluted.
Headache
When the air in a room is not sufficiently refreshed, CO2 and water vapour from our breathing (as well as pollution sources) increase. This lowers the oxygen level, which causes headaches.
Concentration
When the air in a room is not sufficiently refreshed, CO2 and water vapour from our breathing (as well as pollution sources) increase. This lowers the oxygen level, which causes a low ability to concentrate.
Fatigue
When the air in a room is not sufficiently refreshed, CO2 and water vapour from our breathing (as well as pollution sources) increase. This lowers the oxygen level, which causes fatigue.
Shortness of breath
When pollution sources are inhaled, this can irritate the lungs, making breathing difficult. This can occur, for example, when inhaling chemicals such as paint, but also when inhaling sources of pollution that are more difficult to see.
Airways
When pollution sources are inhaled, they can irritate the airways, causing difficult breathing and/or irritation of the cavities and trachea.
Coughing
As a natural reaction to inhaling pollutants that irritate the airways, you may start coughing. Coughing clears the lungs, windpipe and throat.
Allergies
The quality of the air you breathe is logically related to allergic reactions. If the air quality is polluted, you may experience symptoms that make breathing difficult.

What to do about poor indoor air quality?
If you suffer from polluted air in your home, you can effectively improve it by using a air purifier. A air purifier is a device that draws in air and filters out the sources of pollution using a multi-layer filter, after which clean air is blown into the room. During this process, negative ions are dispersed through the room; these attach to fine dust particles so that they descend and can be extracted by the air purifier . The capacity of a air purifier can be demonstrated using the Clean Air Delivery Rate (CADR). The CADR indicates how many cubic metres a air purifier cleans per hour and depends on the capacity of the air purifier and the type of filter.