- 50% Nitrogen and 50% Oxygen
- 96% Helium and 4% Oxygen
- 96% Oxygen and 4% Helium
- 78% Nitrogen and 21% Oxygen
- b
-
SCUBA stands for Self Contained Underwater Breathing Apparatus. It is used for breathing underwater.
Pure mixture of 50% both is dangerous.
Normal ratio of both is not used for deep depth.
Maximum Helium as 96% is used in deep dive to prevent from Nitrogen Narcosis.
Too much Oxygen is dangerous.
