Let me just say here, that use of less than 35% helium is limited to dives of less than 100'. Anything over that requires at least 35% to be meaningful for decompression, and for narcosis. Jan In a message dated 7/17/2003 5:14:52 PM Eastern Standard Time, Jsuw writes: > I did goof here when I mentioned 35% helium as a minimum. I use 30/30 trimix for recreational depth dives, and I do feel the advantage of the 30% helium even on these kinds of dives. I am definitely less narced, and I feel less decompression stress than when I dived air or nitrox in the past. > > Narcosis is insidious; its early effects are subtle and occur shallower than you'd imagine. I doubt you are completely aware of when you are narced. Expect that you are at least mildly narced even at 30'. > > The mixes I use are 30/30 or 18/45 for most of my dives. Note that the 45% helium is slightly higher than the WKPP minimim helium content for 190' gas, but it matches the GUE > standard mix. I feel better with more helium. -- Send mail for the `techdiver' mailing list to `email@example.com'. Send subscribe/unsubscribe requests to `firstname.lastname@example.org'.
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