Trimix Instructor

Tec Deep Instructors provide the most comprehensive technical instruction available. Tec Trimix divers explore the outer edges of technical deep diving. If you are both a Tec Deep instructor and Tec Trimix Diver then the DSAT Tec Trimix Instructor course is for you. The DSAT Trimix Diver Instructor course incorporates instructional philosophies and course goals that directly address the demanding and challenging nature of technical diving with helium gas mixes.


What do you need to start?

  • Have a minimum of 200 logged dives with at least 20 technical decompression dives requiring at least one stage/deco cylinder. Of these, at least 10 must have been made deeper than 40 metres/130 feet using trimix.
  • Be a DSAT Tec Deep Instructor, or have successfully completed the DSAT Tec Deep Instructor Training course including the instructor examinations
  • Be a renewed Master Scuba Diver Trainer or higher level Instructor.
  • Be certified as a DSAT Trimix Diver or have a qualifying full trimix certification

Upon successful completion the candidate must meet the following criteria:

  • Have a minimum of 350 logged dives, with at least 50 decompression dives, 30 deeper than 40metres/130feet using trimix as the bottom gas, also at least 10 of these deeper than 50metres/165feet using trimix with less than 21 percent Oxygen.
  • Have assisted with at least one DSAT Trimix course.
  • Have successfully completed the Tec Trimix Instructor Standards Exam and Tec Trimix Instructor Theory and Practical Application Exam.
  • Be 18 years old

Equipment requirements

  • Double cylinders (minimum 12 l/70 cf each, with larger preferred) with isolator manifold
  • Primary and secondary regulators, one with two metre/seven foot hose (approx.) for gas sharing, and one with SPG Stage/decompression cylinders with regulator, SPG, mounting hardware and proper labeling/markings. Two per diver will be required Backup decompression cylinders as appropriate and required for the environment BCD and harness – redundant buoyancy control is required (double bladder BCD or dry suit if suitable for weight of equipment worn)
  • Depth gauge/computer and backup depth gauge/computer
  • Timing device and backup timing device
  • Trimix decompression information (tables trimix computer) and backup decompression information
  • Exposure suit appropriate for environment and dive duration. (If students will use dry suits, they should be trained/experienced with their use in recreational and technical diving prior to using them for trimix training or diving.)
  • Argon dry suit inflation or other inflation system as needed (students should not inflate dry suit with trimix)
  • Weight system (if needed)
  • Jon line (if needed for current diving environments)
  • Inflatable signal tube
  • Reel
  • Lift bag (bright yellow or per local community practice preferred)
  • Knife/cutting device and backup
  • Slate
  • Backup mask (optional)
  • Compass
  • Lights (optional)
  • Drift kit (if drift decompressing)

What will you do?

As a Tec Trimix Instructor you'll be one of the elite who can teach the Tec Trimix Diver course. During the course you'll learn how to teach diving at the cutting edge down to a depth of 75 metres/240 feet.


How long does it take?

The duration of the course depends on your previous experience, if you're already a Tec Trimix Diver, Trimix Instructor from another organization, or Trimix Diver from another organization. So it could last from a few days to a few weeks.


Required Course Materials

  • TecTrimix Diver Manual
  • Tec Deep Diver Manual
  • TecRec Dive Planning Slate
  • TecRec Dive Planning Checklist Slates
  • TecRec Deep Stop Calculation Table Slate
  • Tec Trimix Diver Instructor Guide
  • Tec Trimix Instructor Cue Cards
  • Tec Trimix Dive Examinations
  • TecRec Equipment Setup and Skills video
  • Enriched Air Diver Manual
  • Enriched Air Diving video
  • DSAT Tec Trimix Diver Lesson Guides
  • Enriched Air cylinder decal Contents stickers
  • Enriched air fill log sheets
  • DSAT Tec Trimix Instructor Theory and Practical Application Exams and answer sheets
  • DSAT Tec Trimix Instructor Standards Exam and answer sheets
  • Tec Trimix Diver Statement of Understanding and Learning Agreement
  • Diver Protection Program enrollment forms

What's included in the course?

At Scuba Cat, all our scuba diving courses include manuals and free scuba diving equipment rental In addition we teach all of our diver level courses in small groups to ensure that you receive the attention that you deserve. All our courses are taught to Standards.


How much will it cost?

DSAT Trimix Instructor - 55,000 Baht (4 days)
Includes: Tec Trimix Instructor Guide, Tec Trimix Cue Cards


What can you do next?

Why not combine this DSAT Trimix Instructor Course with a DSAT Gas Blender Instructor Course? Or why not join us for some Tec Diving around Phuket?