Comprehensive PSAI Nitrox and Trimix Diving Courses

Comprehensive PSAI Nitrox and Trimix Diving Courses

£ 250

Norwich, UK

Intermediate & Advanced & Expert
Lessons & Courses, Certifications
Minimum age: 18
Norwich, UK
Max. group size: 2
Cancellation: Firm
Minimum booking size: 1
£ 250

Activity Highlights:

Embark on an enlightening journey into the depths of scuba diving with our range of PSAI Nitrox and Trimix courses. Nitrox diving uses enriched air with higher oxygen content than regular air, enhancing safety and extending bottom times. Trimix diving goes a step further, incorporating helium to reduce nitrogen and oxygen levels for deep diving. Our sequential courses, taught by the expert diver Scott, are designed to progressively enhance your diving skills and knowledge, ensuring safe and exhilarating experiences under the water.

Course Progression

1) PSAI Nitrox Diver – £250

This foundational course introduces divers to Nitrox, with oxygen concentrations up to 40%. It covers:

  • Benefits and physiological concerns of Nitrox
  • Understanding Nitrox physics and mathematics
  • Dive planning with PSAI tables and charts
  • Nitrox production and cylinder labeling
  • Nitrox-compatible equipment and gas analysis
  • Divers are required to have a minimum of an internationally recognised Open Water course.

2) PSAI Advanced Nitrox Diver – £300

Taking a step further, this course enables divers to use Nitrox up to 100% oxygen, ideal for technical diving and stage decompression. Key areas include:

  • Technical diving benefits of Nitrox
  • Advanced dive planning and decompression fundamentals
  • Technical equipment compatibility and safety reviews
  • Advanced Nitrox can be taught according to the BSAC syllabus as well. Just let Scott know your preference

3) PSAI Extended Range Nitrox Diver – £700

Designed for deep diving up to 55 meters using staged decompression, this course focuses on:

  • Extended range equipment and configuration
  • Understanding the physiological effects at high depths
  • Dive planning and execution for extended-range diving

4) PSAI Trimix Fundamentals – Level 1: 60 Meters (200 Feet) – £900

Transitioning to Trimix, this course introduces helium-based mixtures for diving up to 60 meters, covering:

  • Trimix safety, equipment, and mixture types
  • Physiological considerations and gas management
  • Decompression tracking and problem management

5) PSAI Expedition Trimix – Level 2: 75 Meters (250 Feet) – £950

Expanding the depth range to 75 meters, this advanced course delves into:

  • Advanced Trimix usage and planning
  • Deep dive execution using PSAI Trimix planning tools
  • Handling omitted decompression and cylinder issues

Why Learn with Scott?

Expertise: Scott’s profound knowledge and experience in Nitrox and Trimix diving ensure you receive top-tier instruction. Personalised Training: With a focus on individual learning styles, Scott tailors the courses to suit your pace and skill level. Safety-First Approach: Emphasizing safety, Scott ensures that every diver is equipped with the necessary skills and knowledge to handle diverse diving situations confidently. Exquisite Locations: The variety of dive sites provides a rich, hands-on experience in different underwater environments, enhancing the learning experience. Whether you are starting with Nitrox or aiming to conquer the depths with Trimix, Scott’s comprehensive courses offer a structured and safe pathway to becoming a proficient technical diver. Join us to explore the underwater world like never before!

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What's Included:

  • Comprehensive Training Materials: Course manuals and study guides for each level of training.
  • Professional Instruction: Expert guidance and tuition from a qualified PSAI instructor.
  • Dive Sessions: Both confined water (if applicable) and open water dives as required by the course curriculum.
  • Certification Fees: Upon successful completion of the course, the certification fee for the PSAI Nitrox or Trimix diver level.

What's Not Included:

  • Personal Diving Gear
  • Advanced Gas Mixes: For higher levels, particularly Trimix, there may be additional costs for specific gas blends.
  • Travel and Accommodation: Any travel costs to the dive sites, and accommodation if the dive site is remote.
  • Dive site entry fees.

Frequently Asked Questions

Each course in the PSAI Nitrox and Trimix series has specific prerequisites. As you progress to more advanced courses like Advanced Nitrox, Extended Range Nitrox, and the Trimix levels, prerequisites include the successful completion of the previous course, a certain number of logged dives, and proof of good physical health. It’s essential to have a solid foundation in diving basics before advancing to technical aspects of Nitrox and Trimix diving.

The duration of each course varies. The Nitrox Diver course might take a weekend, whereas the Trimix courses could span several days due to their complexity. Each course typically combines theoretical classroom sessions, practical exercises, and open-water dives. Theoretical aspects cover gas blending, equipment, and safety protocols, while practical sessions focus on real-life application of these principles.

Extras / Options

PSAI Nitrox Diver: Learn to dive with up to 40% oxygen-enriched air for enhanced safety and longer bottom times.

PSAI Advanced Nitrox Diver: Master the use of up to 100% oxygen Nitrox for technical diving and advanced decompression.

PSAI Extended Range Nitrox Diver: Explore deeper dives up to 55 meters using staged decompression with Nitrox.

PSAI Trimix Fundamentals – Level 1 (60 meters): Dive safely up to 60 meters using helium-based Trimix for reduced nitrogen and oxygen levels.

PSAI Expedition Trimix – Level 2 (75 meters): Advance your diving to 75 meters with expert Trimix training for extreme depth exploration.

How it works: 

  1. Make a booking.
  2. The centre will accept your booking, usually within an hour or two.
  3. Pay for the booking to confirm it.

If you have specific questions, please put them in the comments section, and the centre will answer before you pay.

If something isn't right or if there are no dates available, then send us a message in the live chat.

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Cancellation Policy


  • You can cancel until 48 hours before your booking for a full refund
  • If you cancel after that, you’ll pay 50% up to 24 hours beforehand and the full amount after 24 hours 


  • You can cancel until 5 days before your booking for a full refund
  • If you cancel after that, you’ll pay 50% up to 48 hours beforehand and the full amount after 48 hours 


  • To receive a full refund, you must cancel at least 14 days before their booking
  • If you cancel between 7 and 14 days before your booking, you’ll pay 50% of the cost
  • If you cancel less than 7 days before the booking starts, you’ll pay the full amount


  • To receive a full refund, you must cancel at least 30 days before your booking
  • If you cancel between 7 and 30 days before your booking, you’ll pay 50% of the cost
  • If you cancel less than 7 days before the booking starts, you’ll pay the full amount
  • You can also receive a full refund if you cancel within 48 hours of paying, if the cancellation occurs at least 14 days before the booking starts