Firefighter tests mask safety re oxygen/carbon dioxide levels with multiple styles
Land of the Free - 321 Views
Published on 18 Feb 2021 / In Non-profits and Activism
In just a couple of breaths, breathing through a mask set's alarm off for decreased oxygen/increased carbon dioxide. Using a pulse oximeter also finds a raised heart beat.
Found on Rumble: https://rumble.com/vbb6qb-fire....fighter-tests-mask-s