Quote: (Originally Posted by Drmike)
The critical thing with scrubbers is not during deco its during the bottom time at depth when a breakthrough is far more likely on a part used scrubber - hence the 100min rule. Scrubber life is a function of the depth that you are at at that moment in time. A scrubber that may still be good for another 2hours on a 10m dive or deco might be useless at 100m.
Mike, I don't quite agree with that statement. Scrubber duration at shallows depth is quite critical, as it will make the difference wether you can finish the dive on the loop or not. The Inspo's rating allows for 82 min at 100m, most divers won't stay that long at that depth. But getting past the 180 minutes during the entire dive isn't exactly unheard of.
I do agree though that breakthrough is more likely at the deep part of the dive due to ambient pressure, workload (compared to hanging on the line) and maybe temps.