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  • Advanced Trimix

Advanced Trimix

The TDI Advanced Trimix course provides the training required to safely utilize breathing gases containing helium for dives that require staged decompression, utilizing nitrox and/or oxygen mixtures during decompression to a maximum depth of 100 meters (330 feet). The objective of this course is to train divers in the benefits, hazards, and proper procedures of utilizing custom oxygen/helium/nitrogen mixtures as breathing gases.

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  • Must be 18 years old
  • Must be certified as a TDI Extended Range Diver or entry-level Trimix Diver or equivalent
  • Must provide proof of 100 logged dives, out of which 25 dives must be deeper than 30 meters (100 feet)
  • Must provide proof of prior experience with double cylinders and any other specialty-equipment such as a dry suit

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