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Posts Tagged ‘hygiene’

March 7, 2017

History of Ventilation: CO2 indicator and hygiene in high rooms!

1858: Carbon dioxide as an indicator of indoor pollution The German scientist Max von Pettenkofer started to show interest in the ‘air toxins’ that caused smells in overcrowded rooms. He did not know what sort of poisons they were, how dangerous they might be or how they could be measured but he was satisfied that […]...

AUTHOR: Petra Vladykova Bednarova