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dteubner · 20th February 2006, 23:05

Quote: (Originally Posted by Mark Wan)

Discussing rebreathers today with a non-rebreather diver, who's also a physicist. He asked if the scrubber removes all the CO2, will a Rebreather diver have a reduced "urge to breathe"?

rgds
mark

A scrubber should remove all of the CO2 from the inspired gas. (In fact some of the time they probably don't but that's another story).

"The urge to breathe" comes form the CO2 disolved in the blood, not the inspired CO2. There is essentially no CO2 in ordinary room air and you certainly don't need inspired CO2 to breathe.

Dave T

20th February 2006, 23:05	#3 (permalink)
dteubner Pedant Current Rebreather/s: Sport Kiss Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: Adelaide, Australia Posts: 217	Re: urge to breathe and co2 scrubber Quote: (Originally Posted by Mark Wan) Discussing rebreathers today with a non-rebreather diver, who's also a physicist. He asked if the scrubber removes all the CO2, will a Rebreather diver have a reduced "urge to breathe"? rgds mark A scrubber should remove all of the CO2 from the inspired gas. (In fact some of the time they probably don't but that's another story). "The urge to breathe" comes form the CO2 disolved in the blood, not the inspired CO2. There is essentially no CO2 in ordinary room air and you certainly don't need inspired CO2 to breathe. Dave T
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