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The Scuba Club

Established 1972
What is NITROX?

NITROX is any mixture of nitrogen and oxygen. The air we breathe is comprised of approximately 21% oxygen and 79% nitrogen. NITROX mixtures with oxygen percentages greater than 21% are called Enriched Air Nitrox (EANx).

Who uses NITROX?

NITROX was first used in 1912 and has been used extensively for over 30 years in commercial diving and the military. Advanced divers have been taking advantage of NITROX for cave diving, wreck diving, and other diving applications. Since 1985, NITROX has been recognized by national SCUBA certification agencies as an alternate breathing gas for recreational diving.

Why should I dive NITROX?

NITROX has many advantages over air. Some of these benefits are:

  • Increased SafetySignificant increase in bottom time.
    • NITROX when used with standard dive tables or computers, provides a tremendous safety factor. In fact, the actual nitrogen accumulation is that for a 10'-20' shallower dive. The application of NITROX is ideal for divers who wish to be more conservative, those divers who are not as young as they once were, or those who may not be in peak physical fitness.
  • A reduction of the possibility of decompression sickness.
  • A slight reduction in nitrogen narcosis.
  • A reduction of decompression time if the no-decompression limits are exceeded.
  • Reduced fatigue after the dive.

Do I need special equipment?

Your standard scuba gear can be used with NITROX. Tanks for NITROX use are color coded and dedicated for nitrox use only. Any SCUBA tank can become a NITROX tank, all that is required is a special cleaning.

What do I have to do to dive NITROX?

Getting certified for NITROX is simple. All you have to do is take a 1.5 hour classroom only course. The NITROX course will teach you the proper use of  NITROX computers and how to determine the oxygen percentage in your tank. After passing the open-book test you will be issued an SDI NITROX certification. We offer this course once a month and the cost is $100. The class can also be done as a take home course with the book for $125.