PSAI Nitrox Diver teaches you to plan and dive enriched air between EAN22 and EAN40 within oxygen exposure limits. The payoff is practical, not magical: less nitrogen on a given dive can extend no-decompression time and shorten surface intervals on repetitive diving days, especially around 15 to 30 metres where nitrogen loading starts to bite.
Most centres run roughly one day of classroom theory and practical workshops. You study the physics and maths of nitrox, equivalent air depth, PSAI planning charts and the physiological concerns of higher oxygen fractions. Then you practise gas analysis, cylinder labelling and choosing an appropriate blend for a planned dive. Some venues add a training dive; others certify on workshops alone if local standards allow.
PADI's parallel is Enriched Air Nitrox Diver. The habits overlap: analyse every fill, set your computer correctly and never trust a sticker you have not checked yourself. Gas analysis feels fiddly until it is boring. That is the point.
PSAI Nitrox Diver is assessed through theory and practical workshops. Your instructor signs you off when you can analyse gas, plan within oxygen limits and demonstrate the habits the card implies.
Quick answers about this qualification. For anything else, use live chat or browse bookable activities below.
Find activitiesIt is PSAI's entry enriched-air certification. You learn to plan and dive nitrox blends from EAN22 to EAN40, analyse cylinder oxygen content and stay within oxygen exposure limits.
Many liveaboards and busy dive centres assume guests hold a nitrox card. This qualification covers the gas-handling habits they expect.
Both teach recreational nitrox use with emphasis on analysis, planning and oxygen limits. PADI Enriched Air Nitrox Diver is the common cross-reference on adventuro if you are comparing agencies.
Fundamentals overlap more than marketing suggests. Pick the PSAI centre and instructor that fits your diary and logbook goals.
You must be a certified open water diver with PSAI or a recognised equivalent. The course builds on basic dive planning, not beginner pool skills.
Leave a comment when you book with your certification details if you trained abroad or hold cards from several agencies.
Typically one day of classroom theory and practical workshops. Some centres add a training dive on nitrox the same weekend or the following day.
Read any pre-course material before you arrive so the workshop time stays focused on analysers and planning charts rather than catching up on maths.
PSAI Nitrox Diver certifies use of enriched air from 22% to 40% oxygen by volume within oxygen exposure limits. Common recreational fills such as EAN32 and EAN36 fall inside that range.
Higher oxygen percentages for decompression diving belong in Advanced Nitrox Diver, not this course.
Used correctly, nitrox can reduce nitrogen loading on repetitive dives. It is not automatically safer. Higher oxygen brings maximum depth limits that cap how deep you can take a given blend.
The course teaches when nitrox helps, when it does not, and why analysing every fill is non-negotiable.
No. Oxygen toxicity limits often make your maximum depth shallower on nitrox than on air for a given blend. The benefit is usually longer bottom time at recreational depths, not extra depth.
For dives toward technical depth ranges, you need appropriate technical training and experience beyond this card.
That is common on your first nitrox course. The maths looks intimidating until you have run a few planning exercises with your instructor watching. Workshops are designed to make analysis and chart use habitual, not stressful.
Leave a comment when you book if you want a patient centre or if bad experiences with tables put you off technical paperwork. A good instructor paces the day without making anyone feel silly for asking the same oxygen question twice.
Centres provide oxygen analysers for the practical session. After certification you need a nitrox-compatible dive computer and access to analysed nitrox fills.
Standard recreational regulators and BCDs are typically compatible with blends up to 40% oxygen, but confirm service history and manufacturer guidance with your centre.
PSAI centres may include a training dive but the core certification is built on theory and practical gas-handling workshops. Ask your listing if an in-water dive is required locally or offered as an optional add-on.
Even without a mandatory dive, you should log nitrox under supervision before relying on the card on a remote liveaboard.
adventuro lists PSAI centres running Nitrox Diver in the UK and abroad. Compare training dive inclusion, materials and analyser practice on each listing before you pay.
Book before a liveaboard if the itinerary assumes nitrox-certified guests. Half a day of workshops pairs well with a weekend of fun dives at the same quarry or coast.
