A technical diver handling decompression stage cylinders during a dive

Photo by Teemu Virtanen · CC BY-SA 3.0

OC Tech (50m)PADI TecRec

Tec 50 Trimix Instructor

Official course standards ↗Last updated September 7, 2026

Train advanced technical divers in deep trimix applications and extreme narcosis management at Tec 50 depths. As a Tec 50 Trimix Instructor, you'll master instruction across the full scope of Tec 50 Trimix training: gas physics, complex blending theory, decompression software use with multiple gases, and practical dive management in extreme environments. This qualification positions you to mentor divers at the edge of deep technical capabilities and manage training in demanding wreck and cave environments.

Prerequisites

PADI Master Scuba Diver Trainer, PADI Tec Deep (Tec 50) Instructor, Tec 50 Trimix Diver, 200 logged dives (20+ tec decompression dives with 10+ deeper than 40m on trimix). For certification: 350 logged dives (50+ decompression dives deeper than 40m, with 30+ on trimix deeper than 40m and 10+ on trimix deeper than 50m with less than 21% O2)

Standards

What a diver must demonstrate to pass this course — not always published by the certifying agency.

Teach all aspects of Tec 50 Trimix gas physics and decompression theory; conduct deep technical trimix dives to 50m; supervise student dives with proper safety protocols for trimix diving

Instructors Teaching This Course

Dive Centres Offering This Course

We're still building out the directory country by country, so this list isn't every instructor or dive centre teaching it in the world — more locations are coming soon.

Common questions about PADI TecRec Tec 50 Trimix Instructor

What are the prerequisites for PADI TecRec Tec 50 Trimix Instructor?

PADI TecRec's standards require: PADI Master Scuba Diver Trainer, PADI Tec Deep (Tec 50) Instructor, Tec 50 Trimix Diver, 200 logged dives (20+ tec decompression dives with 10+ deeper than 40m on trimix). For certification: 350 logged dives (50+ decompression dives deeper than 40m, with 30+ on trimix deeper than 40m and 10+ on trimix deeper than 50m with less than 21% O2).

How many dives do I need before starting PADI TecRec Tec 50 Trimix Instructor?

PADI TecRec's standards state: 200 logged dives (20+ tec decompression dives with 10+ deeper than 40m on trimix).

What does PADI TecRec Tec 50 Trimix Instructor training involve?

According to PADI TecRec's published standards: Teach all aspects of Tec 50 Trimix gas physics and decompression theory; conduct deep technical trimix dives to 50m; supervise student dives with proper safety protocols for trimix diving.

Where can I take PADI TecRec Tec 50 Trimix Instructor?

1 dive centre and 1 instructor in the TecDiveTools directory teach PADI TecRec Tec 50 Trimix Instructor, in Thailand. Each is listed further up this page.