Quote:
Originally Posted by Oren
Gas ranges changed recently according to GUE:
21/35 100-150
18/45 150-200
At least, this is according to the Tech1 course I was able to sit in recently.
What you do, is, of course, entirely up to you and the team.
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Oren has it right here. Our END limit is 100 feet and we should not surpass 1.2 PPO2 on the working portion of the dive. This translates to using a 100 MOD label on a stage that is used as bottom gas for EAN32, 30/30 would be 120 MOD, 21/35 would be 150 MOD, 18/45 would be 200 MOD so on so forth.
The MOD are different when using these standard gases for deco purposes.
Generaly, we use 1.6 PPO2 for deco gases above 100 feet and 1.4 PPO2 for deco gases bellow 100 feet. Some dives may require changes. Deep deco gases may require a lower PPO2 du to CNS and OTU's which does not really affect us as we don't du these 25 hr epic dives like they do in Wakulla.
Steve