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PADI Tec Trimix 65 Diver

If you’re into technical diving then you know that to extend your depth range you need to use trimix – a blend of helium, oxygen and nitrogen. The Tec Trimix 65 course introduces you to using trimix down to a maximum depth of 65 metres/210 feet. There are advantages to using three gases, but you need to know how to do it right. Earning the Tec Trimix 65 certification makes deeper exploration a reality.

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4-5 days

Who should take this course?

You’re qualified to enroll in the Tec Trimix 65 course, if you:

- Are a PADI Tec 50 diver
- Have a minimum of 100 logged dives
- Are at least 18 years old
- Have a Medical Statement signed by a physician within the last 12 months

Note that qualifying certifications from other diver training organizations may apply – ask your Tec Trimix Instructor.


Tec Trimix 65 course topics include:

- Trimix diving depth ranges
- Exposure planning
- Selecting a mix
- Argon inflation systems
- Handling three or four decompression cylinders
- Decompression models
- Emergency procedures
- Decompression software and multi-gas computers


You’ll use full technical equipment and you may use a technical sidemount configuration, plus two stage/decompression cylinders. Your Tec Trimix Instructor may suggest other equipment.

PADI Tec Trimix 65 Diver's photos
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