Nitrox (EAN)

EAN (Enriched Air Nitrogen) or Nitrox, as it is known colloquially, is an oxygen-enriched air mixture. Normal oxygen content in air is 21%. In the case of EAN, the oxygen content is generally boosted to 32% - or 36%, depending on the planned dive. At Meridiano, we can load 90 tanks per hour with either EAN 32 or EAN 36. If you were to need any other percentage mixture, just consult our specialists. We can make any Nitrox mixture all the up to EAN 80. We'll be happy to oblige, right here at Cozumel.

Caution

Always dive within your own range of experience and knowledge. Never use Nitrox if you have not been certified to use it while diving.

Where quality is the key

At Meridiano, our primary objective is your safety via quality systems and controls. When it comes to preparing EAN-loaded tanks, we use a state of the art cascade filling system. During the process, we use medical grade oxygen to enrich the USP (medical & Oxygen compatible )-quality air. For this, we depend on a Partial Pressures Methodology. As an added safety feature, the EAN or Nitrox filled tanks are "rolled" for up to 10 minutes to ensure an even mixture. Each every tank is then electronically analyzed for oxygen content and clearly labeled directly on the tank.

Color code

Gas	Color
Nitrox 21	Gris
Nitrox 22-31	Morado
Nitrox 32	Verde
Nitrox 36	Naranja
Nitrox 40-50	Rojo
Nitrox 50-90	Azul

Standard Available Nitrox
Nitrox 21
Nitrox 32
Nitrox 36
Nitrox 34
Nitrox 40
One Day advanced notice only
Nitrox 50
Nitrox 80

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Gas	Depth range	MPD (1.6 ATA)	MPD (1.4 ATA)
Air	NA	219 fsw	187 fsw
Nitrox 40%	0 fsw to 80 fsw	99 fsw	83 fsw
Nitrox 36%	70 fsw to 100 fsw	99 fsw	83 fsw
Nitrox 32%	90 fsw to 110 fsw	132 fsw	111 fsw

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DMP: Maximum Permissible Depth..

ATA: Absolute Atmospheres.

FSW: Feet of Salt water.

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