Thread | Brutkey

How much air backwash are you inhaling from others? A CO₂ meter will tell you! Here is how to determine the rebreathed fraction of air.
#COVIDCO2 #ventilation

$Rebreathed CO2 Breath approximately 40,000 ppm Outdoors 400 ppm For every +400 ppm rebreathed fraction +1% 800 ppm = 1%, 1 in 100 breaths 1200 ppm = 2%, 1 in 50 breaths 2400 ppm = 5%, 1 in 20 breaths 5000 ppm = 12%, 1 in 8 breaths$