North Florida Cave and Technical Diving

Entry-Level Trimix Diver Course


This course provides the training required to competently and safely utilize breathing gases containing helium for dives that require staged decompression to a maximum depth of 200 fsw while utilizing nitrox mixtures and oxygen during decompression. The objective of this course is to train divers in the benefits, hazards and proper procedures for utilizing custom Trimix mixtures as breathing gas.

  • Each diver must provide double tank bottom mix cylinders with a minimum capacity of 142 cubic feet, a travel mix cylinder with a minimum volume of 80 cubic feet and an oxygen-clean decompression mix cylinder with a minimum volume of 40 cubic feet. Multiple double tanks and travel mix cylinders are helpful, but not required. A trimix computer and bottom timer/depth gauge are required along with slates sufficient for noting the total dive schedule. Your instructor will provide the use of a Trimix analyzer. A laptop computer is highly recommended, but not required.
  • The Entry Level Trimix Diver Course requires two days and a minimum of four dives for completion. Curriculum consists of class sessions, equipment configuration, open water drills, dive planning using appropriate gas mixtures and volumes for the dives planned and proper dive execution.

Prerequisites: A minimum of 18 years of age, certification as TDI Advanced Nitrox Diver and TDI Decompression Procedures Diver (or equivalent) and a minimum of 100 logged dives.

Certification Available: TDI.

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North Florida Cave
and Technical Divers

PO Box 489 • Branford
Florida 32008-0489

(352) 404-5501

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