Is Nitrox Worth It? EAN32, EAN36 Benefits & Cost

Is Nitrox Worth It? EAN32, EAN36 Benefits & Cost

Is Nitrox worth it? Yes – longer no-decompression time, less fatigue, shorter surface intervals. Common blends: EAN32 (32% O₂), EAN36 (36% O₂). Nitrox eLearning and workshop from 4,990 THB – one-time cost for lifetime certification.

Prefer certification with two SDI training dives? That package starts at 7,990 THB; PADI options and theory-only pricing are listed on the Nitrox Diver course page.

Understanding NITROX for Scuba Diving

NITROX (Enriched Air / EANx) is a breathing gas blend with a higher oxygen percentage than standard air, which contains 21% oxygen and 79% nitrogen. For recreational scuba diving, NITROX typically starts at 22% oxygen, with blends up to 40% available for certified divers. If you wish to use blends with higher oxygen percentages, the TDI Advanced NITROX Course is required.

At Chang Diving Center, we are proud to operate Koh Chang’s only full-service NITROX filling station. Whether you dive with us or another dive center on the island, all NITROX blends come from our state-of-the-art facility.

Nitrox diving for recreational scuba

Nitrox diving simply means breathing an Enriched Air mix (often EAN32 or EAN36) that has more oxygen and less nitrogen than normal air. On every dive you still analyse your cylinder, respect the maximum operating depth (MOD) for that mix, plan with your buddy or dive computer, and stay within the limits of your certification—just as you would on air.

For recreational divers, nitrox is not primarily a “deep diving gas”; it is used to extend no-decompression time, lower nitrogen loading, and shorten surface intervals between repetitive dives. You need a recognised Nitrox / Enriched Air certification before diving nitrox—our Nitrox Diver course on Koh Chang covers theory, gas analysis, and (optional) in-water training.

Why Use NITROX?

There is a common misconception that NITROX is exclusively for deep diving. In reality, recreational divers use NITROX for completely different reasons than technical divers. Here’s why NITROX is beneficial for recreational sports diving:

• Extended No-Decompression Limits: NITROX allows you to stay underwater longer without entering decompression.
• Reduced Nitrogen Absorption: Lower nitrogen levels mean less nitrogen buildup in your bloodstream.
• Shorter Surface Intervals: NITROX enables shorter breaks between dives, typically reduced to a minimum of one hour.
• Increased Energy: Many divers feel less fatigue after NITROX dives due to higher oxygen levels.
• More Repetitive Dives: With NITROX, you can safely enjoy more dives in a single day.

These advantages make NITROX an excellent choice for divers looking to maximize their time underwater and enhance their overall diving experience.

The Risks of NITROX

While NITROX offers significant benefits, it’s essential to understand its risks, such as oxygen toxicity at deeper depths. This is why proper certification is mandatory. At Chang Diving Center, we offer NITROX courses that teach you everything you need to know about the safe use of Enriched Air.

How to Calculate Maximum Operating Depth (MOD)

The MOD of a NITROX blend is the depth at which the partial pressure of oxygen (PPO₂) reaches a safe limit, typically 1.4 bar for recreational diving. For example:

This calculation ensures that you stay within safe limits during your dives. You’ll learn more about these calculations during your NITROX certification course.

Interactive Nitrox calculators

Work out PO₂, MOD, and best mix for a planned depth below. For surface air consumption (SAC) and broader gas planning, see our gas consumption guide.

Ready to dive Enriched Air safely? Book the Nitrox Diver course at Chang Diving Koh Chang.

Certified NITROX Filling at Koh Chang’s Only Full-Service Station

As the only full-service NITROX filling station on Koh Chang, we ensure all our blends meet the highest safety and quality standards. Whether you dive with us or another dive center on the island, you can trust that your NITROX blend comes from a certified gas blender at our facility. Our process includes:

• Certified Gas Blending: All blends are prepared by a certified gas blender (PADI TecRec, TDI).
• Proper Filling Methods: Using Partial Pressure or Continuous-Flow systems.
• Accurate Analysis: Every blend is analyzed, and results are documented in a fill log.

With Chang Diving Center, you can dive with confidence, knowing your NITROX blend is safe and reliable.

If you’d like to become a certified gas blender yourself, our Nitrox Gas Blender Course teaches you professional nitrox blending at our Koh Chang facility.

Want to Dive with NITROX? Start Your Certification Today!

To dive with NITROX blends between 22% and 40%, you’ll need a NITROX certification. At Chang Diving Center, we offer the PADI and SDI/TDI NITROX courses that equip you with all the knowledge and skills required. For those looking to dive with blends above 40%, our TDI Advanced NITROX Course is also available.

With our expertise and the only certified NITROX facility on Koh Chang, we are your best choice for safe and enriching diving adventures.

Why Choose Chang Diving Center for NITROX?

We are more than just a dive center – we are Koh Chang’s trusted source for all things NITROX. Here’s why divers from all over choose us:

• Exclusive NITROX Provider: All NITROX on the island comes from our certified station.
• Certified Courses: We offer complete NITROX training for recreational and technical divers.
• Highest Safety Standards: Our facility follows strict safety protocols and uses advanced equipment.

Whether you are new to NITROX or looking to enhance your skills, Chang Diving Center is here to support you.