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La Maddalena
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Surrey, East and West Sussex, United Kingdom
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Surrey, East and West Sussex, United Kingdom
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Minahasa Regency, North Sulawesi
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The PADI Enriched Air Diver course delivers a focused curriculum on using Enriched Air safely and effectively. While not a physically demanding course, it covers important theoretical knowledge that every Nitrox diver must understand.
Most divers begin with the PADI Enriched Air eLearning. This includes:
In the classroom or dive centre, your instructor will guide you through:
Though not required for certification, many centres offer one or two dives on Nitrox. These may be conducted at a local site, allowing you to apply your new skills under supervision. You’ll practise confirming your blend, setting your computer, and monitoring your oxygen exposure during the dive.
The course concludes with a short written exam to check your understanding of key concepts. Your instructor will ensure you’re confident in applying your knowledge before certification is issued.
With your Enriched Air certification, you’ll be ready to join a wider range of dive trips—and make the most of your time underwater. Browse adventuro to find Nitrox-supported excursions, courses, and rentals near you.
Once certified, you’ll be able to:
It’s worth noting that although Nitrox can extend your no-decompression time, it doesn’t extend your air supply—so good gas management remains essential. You’ll also learn the importance of analysing oxygen content in your tank and setting your dive computer accordingly.
This is typically a one-day course. Most centres offer it as a half-day theory session with the option to add one or two Nitrox dives. The eLearning component takes approximately 2–4 hours and can be completed in advance at your own pace.
The PADI Enriched Air (Nitrox) Diver course focuses on understanding and safely using enriched air blends—typically 32% or 36% oxygen—to extend bottom times and reduce nitrogen loading. Assessment is knowledge-based, with no required dives. You’ll complete independent study through PADI eLearning or classroom sessions, followed by a review with your instructor. The final step is a short multiple-choice exam to confirm your understanding of oxygen exposure limits, analyzing gas mixtures, and managing dive plans using enriched air. Most divers complete the course in a single day. Once certified, you can dive with nitrox blends up to 40% oxygen. Adventuro’s partner centres make it easy to find and book a course near you.
Quick answers about this qualification. For anything else, use live chat or browse bookable activities below.
Find activitiesEnriched Air, also known as Nitrox, is a breathing gas with a higher percentage of oxygen and less nitrogen than regular air. Most recreational blends contain 32% or 36% oxygen. The reduced nitrogen means you absorb less during dives, which can extend your bottom time and reduce surface intervals—especially useful on repetitive dives.
No in-water dives are required to earn the PADI Enriched Air Diver certification. The course focuses on theory and practical skills like using an oxygen analyzer and setting your dive computer for nitrox. Some centres may offer optional nitrox dives, but they aren’t mandatory for certification.
The Enriched Air Diver course is designed for certified Open Water Divers or higher. If you’re just starting your scuba journey, you’ll need to complete your Open Water Diver certification first. Once you have that, Nitrox training is a great next step to expand your dive planning skills and safety knowledge.
Most divers complete the Enriched Air Diver course in one day. The eLearning portion can be done in advance at your own pace, usually taking 2–4 hours. The classroom review and practical skills session typically take another 2–3 hours. Check with your chosen adventuro partner centre for specific timings.
You won’t need special gear to take the course, but you will learn to use an oxygen analyzer and set your dive computer for nitrox blends. If you plan to dive with enriched air after certification, you'll need a dive computer compatible with nitrox and access to nitrox cylinders, which most dive centres offer.
When used properly, nitrox can reduce the risk of decompression sickness by lowering nitrogen exposure. However, it introduces a new hazard: oxygen toxicity. That’s why the course emphasizes planning dives within oxygen exposure limits and checking your gas mix before each dive. Your instructor will guide you through these safety protocols.
No, enriched air doesn’t increase your maximum depth—it actually reduces it slightly due to oxygen toxicity limits. However, it does allow for longer no-decompression bottom times at shallower depths, especially between 18–30 metres. It’s ideal for repetitive diving, such as on liveaboards or dive holidays.
You’ll learn to use an oxygen analyzer to verify the blend in your tank and how to label it with the correct oxygen percentage and maximum operating depth (MOD). This ensures all divers and staff know what gas is in use and helps you plan dives within safe oxygen exposure limits.
Adventuro partners with accredited PADI dive centres around the UK and beyond. You can browse our detailed course pages, compare locations, and book your Enriched Air (Nitrox) Diver course quickly and securely online. Whether you're preparing for a dive trip or just want to dive smarter, we’ve got you covered.
