What is NITROX

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What is NITROX?

NITROX is a breathing-gas which contains more oxygen than in normal breathing-gas (Air) 21% Oxygen 79% Nitrogen. NITROX in Scuba Diving starts with 22% of Oxygen. Recreational Sports Divers are supposed to obtain a certification to use NITROX or Enriched Air which contains a maximum of 40% oxygen. If a diver would like to use a higher percentage of oxygen, they are supposed to join an Advance NITROX class.

There is a common misunderstanding of using NITROX at Recreational Sport Diving. We would like to explain NITROX Diving, in an easy way. This doesn’t prevent you from following a full NITROX Certification Course at all! To use and dive with NITROX, Enriched Air or Safe Air, a full certification course is required.

What is NITROX Called?

• 1.NITROX
• 2.Enriched AIR NITROX
• 3.Safe AIR

Why I should use a Gas like NITROX?

Many Sportsdiver thinks that NITROX is used by Deep-Dives only. This is already a rumour. Yes, NITROX diving got popular in Technical Diving but the Tec Divers didn’t use NITROX as a Bottom Gas, they were using NITROX for their decompression as a Deco Gas and or Travel Gas. Which is totally different to Recreational diving. As a Technical Diver is properly trained to conduct Decompression dives, a recreational sports diver instead is trained to not exceed the NON-Decompression Limit (NDL).
there is a big rule in SCUBA diving: as higher the amount of oxygen inside your breathing gas is as shallower your dive will be!
This is also called Maximum Operation Depth (MOD) of your breathing gas-blend.
So that means that as higher the amount of oxygen inside my breathing gas-blend is as lower the amount of Nitrogen which I inhale will be.

The result of using NITROX at Sport Diving will be.:

• Extended NON-Decompression Limits
• Longer Bottom Times
• Less Nitrogen inside my Bloodstream
• Shortening the Surfaceinterwall to min 1Hour
• It also allows me more repetitive dives a day, and as Oxygen pushes a bit I will feel less tired after diving.

There are also risks involved in Enriched AIR diving. You will learn all about the benefits and risks in your NITROX Course

Determine the MOD for N32

Convert % to Bar = Blend % / 100 = _____Bar Blend N32 32%/100=0.32Bar
Calculate the MOD = Max PPo2 1,4 diving or 1,6Bar decompression
1,4bar/0.32bar=4,3Bbar-1Bar/ATA= 3,37Bar*10m=33,7m MOD
Or
14/0.32=43.75-10= 33,7m MOD
this formulary can be used to easily calculate the MOD.

Determine the Partial Pressure

Another important Calculation is also how to determine the Partial Pressure of a given NITROX Blend.
Convert % to Bar = Blend % / 100 = _____Bar Blend N32 32%/100=0.32Bar
Calculate the Partial Pressure in depth of 30m
Remember your Open Water Diver Course! Pressure increase every 10m
NITROX Blend*Surrounding Pressure= N32 0.32Bar*4Bar= 1.28Bar PPo2

As NITROX is a breathing-gas blend it is like the name says, blended by a Certified Gas Blender at a propper filling station. Please make sure if you join a Course or obtain a blend that the filling station and blender are certified and able to provide you with the necessary paperwork.

• The Certification of the blender (PADI TecRec, TDI…)
• Partial Pressure or Continuous-flow method
• Fill log and gas analysis

As a Certified NITROX Diver, you are allowed to use Enriched Air NITROX Blends from 22% to 40%. If you would like to handle 41% to 100% Oxygen, we are also offering the TDI Advanced NITROX Course

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