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Dewey - the 1.4 is a maximum and is set by the deepest point you will reach assuming a short dive. The number goes down for more time. An example owuld be Ginnie Springs, which has a max of something like 105 feet, so you mix to the 1.4 at that depth, but most of the dive is at 85 feet, but you have called it 100, so are in bounds all around. For long dives, I go to more like .9 to 1.2 with an average below that. For a long max 300 I would use 10 or 11% oxygen and deco on the average depth schedule ( usually more lke 285). dewhurst@at*.me*.ne* wrote: > > I'll bet you're right, that is a better way to dive than air or nitrox. I > have a simple safety question, though. How do you determine the safe oxygen > level for (lets say) a cave dive to 100fsw (no vertical relief), whether > ni -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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