. Dive-Tech: Nitrox and Technical Diver Training

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IANTD - International Association of Nitrox and Technical Divers

IANTD Essential of Technical Diving
IANTD Nitrox Diver
IANTD Advanced Nitrox
IANTD Advanced Recreational Trimix
IANTD Advanced Wreck
IANTD Normoxic Trimix
IANTD Trimix
IANTD Expedition Trimix
IANTD EANX Gas Blender
IANTD Trimix Gas Blender
IANTD Combined EANX and Trimix Gas Blender


The International Association of Nitrox and Technical Divers has been at the cutting edge of technical diver training for more than 20 years. From the first nitrox course in the world to our Tek Lite programs which allow for reduced narcosis in the entry-level tech depth range, through to CCR Cave and Expedition Trimix, we've been setting the standard since the very beginning.

IANTD Essentials of technical diving


IANTD Essentials of Technical Diving
This two day course is intended to give experienced sport divers a simple, non-threatening glimpse at the techniques and skills used in technical diving. Participating in this course will give those divers a better understanding of the detailed planning and preparation required to make a successful and safe technical dive.
Essentials is really a try it before you buy it course for someone who has heard a lot about tech and is wondering what all the fuss is about. But Intro to Tech is also worthwhile for divers who have no real intentions to go on to take a full tech class because the skills it focuses on – gas management, superior buoyancy and trim, situational awareness, and equipment selection – are useful in any form of diving.

Includes: Instruction

Pre-requisites: Open water diver or equivalent, minimum 15 years of age.

Cost: £200

IANTD basic nitrox


IANTD Nitrox Diver
The first step on the nitrox ladder, the IANTD EANx Diver program is designed to provide recreational divers with a safer breathing medium for the sport diving range. Divers may elect to dive the EANx on air tables, EANx tables or computers. This course covers the use of EANx mixes in the range of 21% to a maximum of 40% oxygen.
The IANTD EANx Diver program covers dives in the 12 to 39 msw (40 to 130 fsw) depth range with the emphasis on using EANx 32 & 36. The program may be taken on its own or combined with a variety of IANTD Advanced or Specialty Diver training programs.
It is not necessary to carry out dives to qualify as an IANTD EANx Diver, but is it recommended that divers perform two dives on an EANx mixture of between 24% and 40% oxygen.

Includes: IANTD Nitrox manual & certification

Pre-requisites: Open water diver or equivalent, minimum 15 years of age.

Cost: £90
Basic Nitrox with 2 supervised dive £150

IANTD advanced nitrox


IANTD Advanced Nitrox Diver
The foundation program for safe self sufficient diving. The IANTD Advanced Nitrox program covers the core skills from the technical diver training programs including the use of dual outlet single cylinders or twinsets with central isolation manifolds and decompression skills and procedures using bottom mixes upto 40% nitrox and decompression mixes upto 100% oxygen to a maximum depth of 42 msw (140 fsw).
An essential component of this program is equipment configuration which is covered in a series of lectures and practical workshops. The aim being to construct a safe self sufficient equipment configuration that is streamlined, accessible and promotes familiarity. Theory covered includes the EAD concept, oxygen physiology, % CNS 02 & pulmonary toxicity tracking, the use of EANx as a decompression gas, gas switching techniques, partial pressures and best mixes.
This program qualifies divers to do dive to 42 msw (140 fsw) and perform decompression stops utilising EANx decompression mixtures with an oxygen concentration no greater than 1.5 pO2 for a maximum duration of 15 minutes.

Includes: IANTD Tek Lite manual & certification

Pre-requisites: Nitrox diver or equivalent, 30 logged dives, minimum 15 years of age.

Cost: £420

IANTD basic advanced nitrox


IANTD Advanced Recreational Trimix
The foundation program for safe self sufficient diving. The IANTD Advanced Recreational Trimix program covers the core skills from the technical diver training programs including the use of dual outlet single cylinders or twinsets with central isolation manifolds and decompression skills and procedures using bottom mixes of Recreational Trimix with oxygen contents between 21% and 40% with a maximum pO2 of 1.5 bar, combined with a helium content to yeild an Equivelent Narcotic Depth (END) no greater than 24 msw (80 fsw).
An essential component of this program is equipment configuration which is covered in a series of lectures and practical workshops. The aim being to construct a safe self sufficient equipment configuration that is streamlined, accessible and promotes familiarity. Theory covered includes the END concept, oxygen physiology, oxygen tracking, the use of EANx as a decompression gas, gas switching techniques, partial pressures and best mixes.
This program qualifies divers to dive to 48 msw (160 fsw) and to perform decompression stops utilising EANx decompression mixtures with an oxygen concentration no greater than 1.5 pO2 for a maximum duration of 15 minutes.

Includes: IANTD Tek Lite manual & certification.

Pre-requisites:Must be qualified as an IANTD Recreational Trimix Diver or Nitrox Diver and IANTD Deep Diver with proof of a minimum of 30 logged dives or sufficient experience to satisfy the instructor that the student has the ability and knowledge to continue into this level of training. Must be 18 years or older

Cost: £450

IANTD advanced wreck


IANTD Advanced Wreck Diver
The IANTD Advanced Wreck Diver program is designed to train the diver in extended wreck penetration and the use of EANx for wreck exploration and EANx and oxygen for decompression.
The main focus points of the program include equipment configuration and the advancement of skills previously developed on the IANTD Limited Wreck Diver program. Skills covered include the use of line reels and line drills, developing self sufficiency and safety.

Includes: IANTD Advanced Wreck manual & certification.

Cost: £450

IANTD entry level normoxic trimix


IANTD Normoxic Trimix
The IANTD Normoxic Trimix Diver program is designed to train divers who wish to dive to depths between 39 and 60 msw (130 and 200 fsw), but do not wish to breathe air below 39 msw (130 fsw). Trimix affords a means of managing nitrogen narcosis by reducing the Equivelent Narcotic Depth (END) to a maximum of 36 msw (120 fsw).
The IANTD Normoxic Trimix Diver program includes academic lectures, confined water skills development and open water dives using air, EANx or Trimix using one gas switch. Gas switching computers can be used (and are recommended) but IANTD tables must be used as a backup.
This program qualifies divers to perform Trimix dives to a maximum depth of 60 msw (200 fsw) using custom bottom mixes with a minimum oxygen content of 19% and a maximum of two decompression cylinders.

Includes: IANTD certification.

Pre-requisites: Advanced Nitrox Diver or Advanced Recreational Trimix or equivalent, 100 logged dives, of which 25 must be deeper than 30 msw. Minimum 18 years of age.

Cost: £480 plus course pack

IANTD advanced trimix


IANTD (Advanced) Trimix
This program is designed for those individuals already involved in deep diving activities but wish to develop the skills, ability and knowledge to enable safe diving in the trimix depth range. It includes extensive dive planning workshops covering all bailout scenarios, run time management and choice of gases. The diver's skills are developed to the highest level to promote self sufficiency and safety whilst maintaining the ability to operate within a team.
The program includes academic lectures, confined water skills development and open water dives. Gas switching computers can be used (and are recommended) but IANTD tables must be used as a backup.
The knowledge and skills taught in the IANTD Trimix Diver program qualify divers to perform Trimix Dives to a maximum depth of 100 msw (333 fsw).

Includes: IANTD certification.

Pre-requisites:Technical nitrox/Normoxic Trimix Diver or equivalent, 200 logged dives, of which 25 must be between 42 and 60 msw. Minimum 18 years of age.

Cost: £540 plus course pack and instructors gas and dives at cost



IANTD Expedition Trimix
This program is designed to provide training for divers already involved in deep diving activities to more safely conduct exploration dives requiring extended decompression profiles and helium-based gas mixtures as well as information on remote operations and expedition preparations. The IANTD Expedition Trimix Diver program requires the diver to be self-sufficient, reliant and capable of operating within a team.
The knowledge and skills taught in this program equip the diver to perform trimix dives to a maximum depth of 120 msw (400 fsw) with the use of multiple stages and the use of a surface and inwater support team.

Includes: IANTD certification.

Pre-requisites:IANTD Trimix Diver or equivalent, Must provide proof of a minimum of 300 logged dives, of which at least 100 were Trimix dives or sufficient experience doing technical dives to satisfy the instructor that the student has the ability and knowledge to continue into this level of training. Minimum 18 years of age.

Cost: £540 plus course pack and instructors gas and dives at cost

IANTD gas blender


IANTD Gas Blender
This non-diving program is designed to train competent personnel in the safe handling of oxygen and the preparation of enriched air nitrox for diving use.
Upon completion of this program, the student will have developed a thorough understanding of the physical properties of oxygen; its forms, purities, hazards and the essential skills and knowledge to handle it in a safe and competent manner. You will be able to blend Enriched Air Nitrox according to accepted industry practices. The program includes theory and a practical training session.
Note that the IANTD UK EANx Blender program is a blending-only qualification.

Includes: IANTD EANX Blender manual & certification.

Pre-requisites: Minimum 18 years of age.

Cost: £150

IANTD advanced trimix gas blender


IANTD Trimix Gas Blender
This non-diving program is designed to train competent personnel in the safe handling of oxygen and the preparation of trimix for diving use.
Upon completion of this program, the student will have developed a thorough understanding of the physical properties of oxygen and helium; their forms, purities, hazards and the essential skills and knowledge to handle them in a safe and competent manner. You will be able to prepare Helium blends according to accepted industry practices. The program includes theory and a practical training session.
Note that the IANTD UK Trimix Blender program is a blending-only qualification.

Includes: IANTD Trimix Gas Blender manual & certification.

Pre-requisites: Minimum 18 years of age.

Cost: £150

IANTD advanced trimix gas blender


IANTD Combined EANX and Trimix Gas Blender
This non-diving program is designed to train competent personnel in the safe handling of oxygen and the preparation of EANX and trimix for diving use.
Upon completion of this program, the student will have developed a thorough understanding of the physical properties of oxygen and helium; their forms, purities, hazards and the essential skills and knowledge to handle them in a safe and competent manner. You will be able to prepare Nitrox and Helium blends according to accepted industry practices. The program includes theory and a practical training session.
Note that the IANTD UK EANX and Trimix Blender program is a blending-only qualification.

Includes: IANTD EANX and Trimix Gas Blender manuals & certification.

Pre-requisites: Minimum 18 years of age.

Cost: £250




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