Quote: (Originally Posted by
Drmike)
Personally I dont care so much about the scrubber durations or their effciency (amount of sorb/min duration) as I do for WOB results
So to me the best unit is one that has the best WOB and a reasonable scrubber life (30 mins difference in scrubber duration means nothing in the real world where we best guess when to change based on usage or next dive requirements)
A high WOB will contribute a lot to things accelerating to becoming pair shaped when the sh1t hits the fan.
Another point is if I want to make the dive safer (from a scrubber expiry viewpoint) I can put in a fresh fill, but I cant do anything to change the WOB.....
I have been emphasizing the importance of low WOB to safety for a long time and I doubt I could have done some of the divng I have done, or would have even attempted it, if I was diving on a unit with high WOB.
A unit that has OK WOB at 30M and a low RMV will breathe like a straw at 60M when you are finning at your maximum exertion level, trying not to be blown any further down in a nasty current, something which has happened to me many times. If I understand my physiology correctly, a CO2 hit starts with the diver retaining CO2 and not being able to vent it out of the body fast enough and a high WOB, especially at depth, is certainly the last thing you want when the "s" hits the fan.