Become a Technical Extended Range Instructor with SSI

The SSI Technical Extended Range Trimix Instructor course is the next professional course to take after becoming an SSI Extended Range Trimix Instructor. You will learn all you need to conduct the Technical Extended Range Trimix course and train divers to conduct two gas switch decompression dives up to a maximum depth of 60 meters. The course is intended for the use of trimix as the breathing gas, to reduce inert gas narcosis and increase diver safety. A Technical Extended Range ‘air’ Instructor certification option is also available for areas where helium is inaccessible. Grow your career as a professional diver. Earn the SSI Technical Extended Range Trimix Instructor or SSI Technical Extended Range Instructor certification. Start this SSI dive certification online today!

Discover Local Course Dates

Whether you’re on the move or planning ahead, we’ve got you covered. Never miss out on exciting training opportunities and register with ease.

Facts and Training Standards

Amount of Academic Sessions



Amount of Pool/Confined Water Sessions



Amount of Open Water Sessions



Maximum Training Depth


60 m / 180 ft

Suggested duration (h)



SSI Standards


English US (imperial)
portuguese (europe)
Português (Portugal)

Continue your professional career

Becoming an SSI Technical Extended Range Trimix Instructor is the beginning of an exciting career pathway! Take the next step and start teaching more Extended Range courses. Teaching more courses is the best way to grow your diving career, have more flexibility, and generate more income as a professional diver. Choose your preferred SSI dive certifications and get started online today.

Explore career opportunities for dive professionals worldwide

Stop waiting, start exploring the world and turn your passion into a career! MyDiveGuide is a unique dive site database with over 16,000 dive sites, thrilling specialist dives and featured destinations. These are the places where scuba instructors and divemasters have great job opportunities! Ready to live your ultimate dream? Check out MyDiveGuide and start your diving career today with SSI!

in the summer months, you can can expect to see sharks in Scotland

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The Sunshine State Florida offers many great and divers dive sites from the tropical Florida Keys to deep shipwrecks and crystal clear freshwater springs.

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Italy is a peninsula in southern Europe, famously shaped like a boot that is surrounded by three parts of Mediterranean - offering various dive sites.

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The Philippines is an archipelago composed of over 7,000 islands in three main regions: Luzon, Visayas and Mindanao.

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Sri Lanka has a warm and tropical climate and is home to an amazing range of land animals and marine life which makes up to a great dive destination.

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Federated States of Micronesia

Divers and Snorkelers from all around the world come every year to visit these picturesque islands, Micronesia.

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The last wild frontier, Canada, has a well-kept secret: the spectacular diving that can be done here.

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The Arab Republic of Egypt is a country that sits in the Northeast corner of Africa on the Mediterranean Sea to its north and the Red Sea to its east.

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