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<div class="moz-cite-prefix">On 15-11-2021 08:33, Robert Helling via
subsurface wrote:<br>
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cite="mid:FEAD61C7-65F0-4A2F-A7F4-F88CFA96DB5C@atdotde.de">
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<p style="caret-color: rgb(0, 0, 0); font-family:
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0px; text-decoration: none;" class="">As a ball park
approximation, many CCR dives (up to 65m) are done
using air as a diluent, supplemented with oxygen from
the O2 cylinder to make up for oxygen consumed as well
as for higher O2 levels during shallower deco.<br
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<div class="">But what is the ratio of diluent use to O2 use? That
test dive uses 123 liters of O2 and 100 liters of air.</div>
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<p>The idea that there is a ratio between diluent use and O2 use is
flawed. The main driver for O2 use is time and workload, and for
diluent its the dive profile. <br>
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<p>--jan <br>
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