Rebreather World - View Single Post - Diluent selection and the great alpinist v siege debate

diverklondike · 31st December 2006, 01:28

All very good points on both sides...

90% of the time my dil is 10/52.... Good or bad the reasons are... (in no special order....
1) Easy to mix and top off
2) From 100 ft to 280 or so I use the same dil... simple simple simple
3) It makes the math dam simple for verifying that your cells are working properly based on a dil flush. #of ATM x .1 .... You have to like that..
4) I do like to have a mix that will do a reasonable job of reducing my ppo2 if it's spiking for some reason...

For the reasons that Dave has mentioned my bailout mixes for a 250ft dive typically 20/30 and 40/30. My preference will always be SCR versus full OC bailout...

Personally I am less concerned about not being able to elevate my ppo2 level since I have a redundant 02 source with me at all times...

Here are the only other times that typically use a different dil...
1) Oyster diving... then it's air....
2) Most cave diving... then it's typically 20/30 for dives in the 100ffw range.
3) Stuff deeper than 280.... then it's some flavor of heliair..

Just my 2 cents... Lots of good conversation regardless...

Dive safe...

Mark

31st December 2006, 01:28	#18 (permalink)
diverklondike RBW Member Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Oct 2005 Location: Delaware, USA Posts: 1,713	Re: Diluent selection and the great alpinist v siege debate All very good points on both sides... 90% of the time my dil is 10/52.... Good or bad the reasons are... (in no special order.... 1) Easy to mix and top off 2) From 100 ft to 280 or so I use the same dil... simple simple simple 3) It makes the math dam simple for verifying that your cells are working properly based on a dil flush. #of ATM x .1 .... You have to like that.. 4) I do like to have a mix that will do a reasonable job of reducing my ppo2 if it's spiking for some reason... For the reasons that Dave has mentioned my bailout mixes for a 250ft dive typically 20/30 and 40/30. My preference will always be SCR versus full OC bailout... Personally I am less concerned about not being able to elevate my ppo2 level since I have a redundant 02 source with me at all times... Here are the only other times that typically use a different dil... 1) Oyster diving... then it's air.... 2) Most cave diving... then it's typically 20/30 for dives in the 100ffw range. 3) Stuff deeper than 280.... then it's some flavor of heliair.. Just my 2 cents... Lots of good conversation regardless... Dive safe... Mark
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