The SSI Extended Range Trimix training program is the core program that all other open-circuit programs build on. This program is the start of your exciting journey to become an accomplished tech diver. Using either a sidemount or twinset configuration, this program prepares you to plan and conduct trimix decompression dives to a maximum depth of 45 meters.

You will learn the techniques and procedures for using trimix breathing gases and nitrox mixtures of up to 100% oxygen for decompression. You will earn the SSI Extended Range Trimix diver certification after completing this program and gain new tech diver knowledge.