On 15-11-2021 08:33, Robert Helling via subsurface wrote:
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.
But what is the ratio of diluent use to O2 use? That test dive uses
123 liters of O2 and 100 liters of air.
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.
--jan
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