Quote: (Originally Posted by Pierre Farrugia)
, I tought that if you can do a 120m+ dive then 2 dives to 60m could be ok,
You can do as many deep dives as you want on the same (YBOD) scrubber provided you dont go below 50m after you have total usage of 100mins (120?) on the scrubber. I cant explain it any simpler than that.
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.