Why this course

Nitrox is a simple and powerful tool. Here you learn to read mixes correctly, set the computer and plan more effective dives while staying within recreational limits.

• Informed planning:best mix, EAD and respecting MOD.
• Well‑set instruments:analysis, labels, EANx computer setup.
• Focus on oxygen: pO₂ management and exposure (CNS%) with common sense.

How it works

The theory on EVO gives you the foundations with examples and quizzes; in practice you analyze the mixes, fill out the labels, set up the computer, and plan nitrox dives. Open-water dives are optional under the standard, but often useful for consolidation.

• EVO e‑learning: pO₂, MOD, EAD, best mix, CNS%.
• Practical activities:analysis, labels, nitrox logs, computer setup.
• Open water (optional):full application with dedicated briefing.

Essential prerequisites

• Minimum age: 15 years (Nitrox/EANx Diver) or 12 years (Junior).
• Prerequisites: Open Water Diver or Junior Open Water Diver (or equivalents).
• Medical fitness

What you will take home

• Nitrox planning within no-decompression limits with a buddy at least OWD.
• Use of mixes between 22% and 40% O₂ in compliance with the MOD.
• Control of pO₂ ≤ 1.6 bar and CNS%.
• Correct procedures for analysis, labeling and nitrox logging.

The certification

Enables you to plan, conduct, and log recreational nitrox dives (22–40%) with a buddy who is at least OWD, in compliance with the MOD and the oxygen exposure specified by the course.

Standards and recognition

The course complies with ISO 11107 and the RSTC Enriched Air Nitrox standard. PSS certifications are internationally recognized: PSS Worldwide is a member of the RSTC, the consortium that brings together the leading scuba training agencies.

After Nitrox/EANx Diver: natural growth

Consolidate and expand:

• Experienced Nitrox/EANx Diver – nitrox skills.
• Advanced Open Water Diver – more control and variety.
• Deep Diver – informed depth planning.
• Wreck Diving – wreck procedures.
• Underwater Ecology – environmental awareness.