These shops mix into oxygen serviced cascade cylinders.
Pure oxygen scuba tanks.
Price from 274.
Scuba air tank 1l mini oxygen cylinder underwater respirator scuba dive cylinder scuba diving equipment with 15 20 minutes capability underwater breathing device scuba accessories 1.
To understand why you need to go into some detail your lungs are basically a long series of tubes that branch out from your nose and mouth from trachea to bronchi to bronchioles and end in little thin walled air sacs called alveoli.
Several risks are associated with the use of pure oxygen in diving.
As a certified scuba diver i learned that breathing pressurized pure oxygen leads to oxygen toxicity which can be fatal.
Because the final mix in the cascade cylinders has an oxygen content of 40 percent or below a diver s scuba cylinder is not required to be oxygen serviced.
So the short answer is pure oxygen is generally bad and sometimes toxic.
Sherwood aluminum 100 cf scuba diving 3300 psi dive tank 2.
Recreational scuba tanks are filled with compressed purified air.
Generic cylinder and valve maintenance guides rarely address the specific nature of the scuba industry especially in regards to nitrox applications.
For deco mixes above 40 percent there is simply no choice.
However i m not anywhere near an expert on the mechanism of oxygen toxicity but i believe it has to do with resulting in a lot more reactive oxygen species which can cause oxidative stress and lipid peroxidation.
While oxygen compatible lubrication of the neck threads and o ring in scuba valves and cylinders is probably harmless under ideal conditions it also has no clear benefit.
This air contains about 20 9 oxygen.
Aunlpb diving tanks diving oxygen tank portable 1l mini scuba.
The dgx premium o2 valves are not any more so in those characteristics than any other scuba tank valves we sell.