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- Thread starter Rybee
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No it is NOT possible to do so. You MUST be on Trimix for all 4 dives for the Trimix certification, whereas Extended Range ONLY uses Air, Nitrox, and Oxygen as breathing media. There is no credit across these two courses offered by TDI since 2018.
Here are the course requirements:
Extended Range
1. Four dives with a minimum accumulated bottom time of 100 minutes
2. All dives must be deeper than 30 metres / 100 feet with 2 dives deeper than 40 metres / 130 feet
3. A maximum of 2 dives from Advanced Wreck course may be credited towards the total dives required, at the instructor’s discretion
Trimix
1. Four decompression dives using trimix as bottom gas are required with a minimum accumulated bottom time of 100 minutes
2. Two of the dives should be deeper than 40 metres / 130 feet.
3. A maximum of 2 dives from the Advanced Wreck course may be credited towards the total dives required, at the instructor’s discretion
Hope this helps.
Here are the course requirements:
Extended Range
1. Four dives with a minimum accumulated bottom time of 100 minutes
2. All dives must be deeper than 30 metres / 100 feet with 2 dives deeper than 40 metres / 130 feet
3. A maximum of 2 dives from Advanced Wreck course may be credited towards the total dives required, at the instructor’s discretion
Trimix
1. Four decompression dives using trimix as bottom gas are required with a minimum accumulated bottom time of 100 minutes
2. Two of the dives should be deeper than 40 metres / 130 feet.
3. A maximum of 2 dives from the Advanced Wreck course may be credited towards the total dives required, at the instructor’s discretion
Hope this helps.
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Edit to add: oh, I misunderstood, I did not realize is a duplicate of this thread: TDI XR to TDI Trimix Crossover? . I will lock this thread, and we can continue the discussion there. Cheers.
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