Measurement of CO₂ and other values in schools – why we should approach this task during and after the pandemic
Summary
As I write these lines, I have the distinct scent of my schools gym mats in my nose, as clearly as if I’m right now facing the terrible task of performing some stupid gymnastic exercise. We know today that an excessively high proportion of CO₂ in the air can have disastrous consequences for concentration and that the levels become critical much earlier than instinctively suspected – depending on how many people are in a room, how old they are, how large their lung capacity is, and other factors. There’s no exact, generalized value, the time frame is defined individually according to the size of the room, the number of school children, their age, activities in the classroom (in music lessons, singing causes significantly higher aerosol emissions), and other factors. But air quality should not only be measured in terms of CO₂ levels, as we know that other factors are also decisive in the pandemic winter: very high temperatures of more than 30 °C inactivate corona viruses, which is why we had a comparatively pronounced drop in case numbers all over the world in the summer months. Our founder Dirk Paessler felt committed to this idealistic goal already in spring, when he launched CovidCare, an online tool to better estimate the utilization of hospitals with SARS-CoV-2 patients, both in normal wards and in the intensive care unit.
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