Store Hours: Monday - Thursday Noon-6; Friday Noon-5; Sat noon-4; Closed Sunday and Major Holidays

"Good Divers never stop learning"


Are you ready to progress on as a Gas Blender? The TDI Advanced Gas Blender Course picks up where you left off in the previous sequence in training, the TDI Nitrox Gas Blender course.After successful completion of the TDI Advanced Gas Blender course, you will be able to engage in the blending of oxygen and helium based gases. The objective of this course is to train candidates in the proper procedures needed for the preparation and blending of high quality nitrox and trimix gases for use in technical diving. The TDI Advanced Gas Blender course will take you through this process in an easy-to-understand format.

Who this course is for:

Whether you’re a dive shop employee wanting to learn the proper procedures for advanced gas blending or a diver interested in the process of advanced level blending, this course will give you an in-depth, behind the scenes perspective on how your cylinder goes from empty to full of nitrox or trimix gases.

What you can expect to learn:

The TDI Advanced Gas Blender Course takes an in-depth look at all of the following and more!

The Responsibility of the Gas Blender
Gases of diving




Other inert gases 

Oxygen handling
Oxygen hazards
Causes and prevention of oxygen fire
Oxygen system design
Local regulations for gas blending and handling
Gas production equipment

Filtration systems
Analog gauges

Mixing techniques

General considerations
Continuous blending systems
De-nitrogenated air systems
Pre-mix system
Partial pressure blending mathematics

Oxygen analysis

Oxygen analyzers

Cylinder handling and sign out

What’s in it for you?

Upon successful completion of this course, graduates may engage in the blending of all diving gases, without direct supervision of an Instructor.

TDI Advanced Nitrox Gas Blender minimum certification requirements:

Satisfactorily complete the TDI Advanced Gas Blender course written examination with an 80% passing grade, followed by 100% remediation by the Instructor
Candidates must successfully blend, and analyze, 5 nitrox cylinders and 3 trimix cylinders
Demonstrate proficiency in blending, and analysis, of nitrox and trimix gases



Nitrox Gas Blender certification or equivalent.  Minimum age: 18 years old

TDI Advanced Gas Blender 

When are classes?

Check out our calendar

Learn to blend technical diving gases 


Complete the form below and a qualified staff member will contact you directly to discuss your experience and enroll you in our available class schedule.