dealing with unused tanks

[Dirk Hohndel]

On December 30, 2012 12:52:05 PM Jef Driesen <jefdriesen at telenet.be> wrote:
> Are there any devices that allow switching to inactive gasmixes during 
> the dive.
> That would be very counter intuitive. If the answer is yes, then what's the
> purpose of marking a gas as inactive?

That's night what I meant. Some devices report as "inactive" whatever 
gas was inactive at the end of the dive. But those gases may have been 
used before being marked inactive during the dive (as in "don't use for 
deco prediction").

/D