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***ScubaDadMiami*** · 3rd January 2007, 03:02

It all depends on the length of exposure plus factors like how hard I am working. Normally, I stay between 1.0 and 1.2 for the bottom, and then I go with 1.2 or so during ascent and deco. I will also do a flush with O2 at 20 feet if I feel the need (plus it's a good check on the O2 sensors).

Just because some people don't tox at higher limits after surviving a number of exposures without a hit does not mean that this will always be the case. Check out Donald, Oxygen and the Scuba Diver. Anything beyond 1.6 is not very predictable, and individuals can undergo several exposures for long times without hits and then suddenly have a hit within a relatively short exposure the next time.

3rd January 2007, 03:02	#3 (permalink)
*ScubaDadMiami* Moderator Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2005 Location: Florida, USA Posts: 2,044	Re: max PPO2 It all depends on the length of exposure plus factors like how hard I am working. Normally, I stay between 1.0 and 1.2 for the bottom, and then I go with 1.2 or so during ascent and deco. I will also do a flush with O2 at 20 feet if I feel the need (plus it's a good check on the O2 sensors). Just because some people don't tox at higher limits after surviving a number of exposures without a hit does not mean that this will always be the case. Check out Donald, Oxygen and the Scuba Diver. Anything beyond 1.6 is not very predictable, and individuals can undergo several exposures for long times without hits and then suddenly have a hit within a relatively short exposure the next time. __________________ Howard Packer IANTD CCR Instructor Miami Beach, Florida CCRDiveTraining.com Last edited by ScubaDadMiami : 3rd January 2007 at 03:06.
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