Originally Posted by
admikar
Difference between medical, aero and industrial oxygen is paper trail.
They are all filled from the same supplier tanks.
Yes, but different responses to an emergency if a medical bottle starts leaking, or the pilots' system goes berserk.
There is an urban myth about a fighter pilot whose moustache caught fire in his mask when the system got to 100% at altitude - he had been eating peanut butter for breakfast.