Enriched Air Nitrox Diver
Get more from your dives. Learn how to analyse, plan and safely use Enriched Air Nitrox with confidence.
About the Enriched Air Nitrox Diver Course
What Will You Learn?
During the course, you'll learn how to analyse the gas in your cylinder, understand oxygen exposure and Maximum Operating Depths (MOD), plan dives using enriched air and correctly set your dive computer. You'll also cover the equipment considerations and procedures that help you use Nitrox safely and confidently.
Knowledge & Preparation
- Understand Nitrox and how it differs from standard air.
- Learn about oxygen levels and exposure limits.
- Calculate Maximum Operating Depth (MOD).
- Plan Nitrox dives and set your dive computer.
- Understand cylinder analysis and labelling procedures.
Practical Skills
- Use an oxygen analyser to check cylinder contents.
- Confirm the oxygen percentage in your gas mix.
- Calculate MOD for your chosen gas mix.
- Check cylinder labels and gas percentages.
- Follow the correct procedures before using Nitrox.
How Does the Course Work?
The Enriched Air Nitrox Diver course combines eLearning with a hands-on cylinder analysis session. You'll build your understanding of Nitrox, learn how to check your gas mix and practise the calculations and equipment checks needed to prepare for a dive. There is no in-water training, so you can focus on developing the knowledge and practical skills needed to use enriched air safely.
Work through the eLearning material to understand the basics of Enriched Air Nitrox, how it differs from standard air and why divers choose to use it.
Get hands-on with an oxygen analyser. Practise checking your cylinder's gas mix, confirming the oxygen percentage and correctly labelling your cylinder.
Put your knowledge into practice by calculating Maximum Operating Depth, understanding oxygen exposure and learning how to set your dive computer for the gas you are using.
Complete the required course assessments and demonstrate your understanding of safe Nitrox use. Once certified, you'll be able to plan and prepare for dives using suitable enriched air mixes within your training limits.
Prerequisites & Requirements
Certification Requirements
- You can complete this course alongside your Open Water Diver training.
- If you are already certified, you should hold at least an Open Water Diver certification or equivalent.
- You'll need to complete the required Nitrox theory and knowledge assessments.
What Else Do I Need?
- Minimum age: 12 years old.
- Complete a medical questionnaire.
- Doctor's approval may be required if any medical conditions are flagged.
What's Included?
Included in Your Course
- eLearning course materials.
- Professional instructor tuition.
- Hands-on cylinder analysis practice.
- Oxygen analyser use during the practical session.
- Required course assessments and certification.
Additional Information
- This course combines theory with practical cylinder analysis.
- No in-water training or practical diving activities are required.
- You'll learn to analyse and prepare your cylinder before using Nitrox on a dive.
- The course covers enriched air mixes up to a maximum of 36% oxygen.
Why Train With Divecrew?
More Than Just a Course
At Divecrew, we want your training to be enjoyable, supportive and something you can build on long after certification.
- Experienced and supportive instructors.
- Training tailored to your experience and confidence.
- A friendly diving community.
- Access to further courses, trips and diving opportunities.
- A dive centre and shop to support your ongoing diving.
Where Can You Go Next?
Your diving journey doesn't stop here. Build on your skills, explore new experiences and discover more of what diving has to offer.
Advanced Open Water Diver
Develop your confidence, expand your skills and experience new types of diving.
Find out more →
Explore Speciality Courses
Choose from a range of courses to develop your interests and become a more capable diver.
Explore courses →
Join a Divecrew Trip
Put your training into practice and enjoy new adventures with the Divecrew community.
View upcoming trips →
Explore UK Diving
Discover the fantastic diving opportunities waiting beneath the surface around the UK.
Discover UK diving →Frequently Asked Questions
What is Nitrox?
Nitrox, also known as Enriched Air, is a breathing gas containing more oxygen and less nitrogen than standard air. It is commonly used by divers to extend no-decompression limits on suitable dives when planned and used correctly.
What are the benefits of diving with Nitrox?
Because Nitrox contains less nitrogen than standard air, it can reduce the amount of nitrogen absorbed during a dive and may provide longer no-decompression limits at the same depth. The benefits depend on the gas mix, depth and dive plan.
Can I complete this course while training for Open Water Diver?
Yes. You can complete the Enriched Air Nitrox course alongside your Open Water Diver training. If you are already certified, you should hold at least an Open Water Diver certification or equivalent.
Does the course involve any diving?
No. The course combines theory with hands-on cylinder analysis and dive planning. It does not require in-water training or practical diving activities.
How long does the course take?
The course duration is approximately one hour. This includes the instructor-led session and practical cylinder analysis, alongside the required eLearning and assessments.
Will I need to use an oxygen analyser?
Yes. You'll practise using an oxygen analyser to check the oxygen content of a cylinder and confirm the gas mix before using it.
Can I use Nitrox with my existing dive equipment?
Equipment must be suitable for the gas mix being used and operated within the manufacturer's specifications. You'll cover the relevant equipment considerations and safe procedures during the course.
Does Nitrox allow me to dive deeper?
No. Nitrox does not automatically allow deeper dives. Because it contains more oxygen, it can introduce a shallower Maximum Operating Depth (MOD), depending on the gas mix. Always plan and conduct dives within your training and gas limits.
What is the maximum Nitrox blend covered?
This course covers enriched air mixes up to a maximum of 36% oxygen. You'll learn how to analyse your cylinder and understand the limits that apply to the gas mix you are using.
Ready to Take Your Diving Further?
Learn how to analyse, plan and safely use Enriched Air Nitrox. Book your course with Divecrew and add another useful skill to your diving experience.
