Standard Mixes or Optimised for each dives...

***schford*** · 9th June 2005, 18:14

Hi Guys,

Wondered what you do - pick from one of your standard mixes eg 20/40 or 10/52 etc or do you choose a mix thats optimised for the dive your going to do. eg o2 content depends on target depth and He content depends on what your want your END to be for target depth...

Stuart

***Decodiver*** · 9th June 2005, 19:08

Down to 90 metres 10/52, only for ease really.

After that a mix that will give me a PPO2 of 1.0 on the bottom and a narc of 20 metres.

Don't like narcosis, narcosis kills.

Cheers,

Dave Cooper.

decoweenie · 9th June 2005, 19:18

Quote: (Originally Posted by Decodiver)

Down to 90 metres 10/52, only for ease really.

After that a mix that will give me a PPO2 of 1.0 on the bottom and a narc of 20 metres.

Same as Dave, except 10/50 down to 92m instead since it is a wreck that we dive. Past that, 10/70 to ~115m (max of KISS first stage).

10/50 is easy to mix and top off. Also easy to compute PO2 when diluent flush. However, if inexperience than must exercise caution on/near surface.

Deco is 50%.

Pelagian · 9th June 2005, 20:43

10/60 down to 100m, optimsed after that.

Seb

Drmike · 10th June 2005, 00:58

I use 10/50 for everything down to 90m.

AndyP · 10th June 2005, 07:43

Most of the deep stuff around the south coast is 60 ~ 70M so I tend to run 18/45. I don't like hypoxic gasses unless they are necessary.

Andrew

Mark Chase · 10th June 2005, 09:37

Quote: (Originally Posted by AndyP)

Most of the deep stuff around the south coast is 60 ~ 70M so I tend to run 18/45. I don't like hypoxic gasses unless they are necessary.

Andrew

Same as him

ATB

Mark Chase

**nigelh** · 10th June 2005, 10:27

Quote: (Originally Posted by AndyP)

Most of the deep stuff around the south coast is 60 ~ 70M so I tend to run 18/45. I don't like hypoxic gasses unless they are necessary.

As above but 18/40.
Stages are 18/40 and 50/0

***EBT*** · 10th June 2005, 10:42

If I know its going to be a max of 40m, I prefer 20/40 (better for SCR and deco options). Mostly 10/52 (to 80m, cos its easy to mix and flexible for depth). Deeper stuff, optimised dil.... normally 8/70ish.

Choice of dils is partly driven by bailout scenarios.... which differ when your SCR mode isnt as easy.... or you're inside something where your bailout is more critical (Cave).

I aim to be using dils that balance flexibility of range, with effectiveness of bailout options (both hyperoxic and scr).

/Zak

cedricverdier · 10th June 2005, 14:30

Hi,

Standards diluent mixes: 11/46 then 8/62 for deeper stuff

and standards bail-out mixes as well

Cheers

9th June 2005, 18:14	#1 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,559	Standard Mixes or Optimised for each dives... Hi Guys, Wondered what you do - pick from one of your standard mixes eg 20/40 or 10/52 etc or do you choose a mix thats optimised for the dive your going to do. eg o2 content depends on target depth and He content depends on what your want your END to be for target depth... Stuart
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9th June 2005, 19:08	#2 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,181	Down to 90 metres 10/52, only for ease really. After that a mix that will give me a PPO2 of 1.0 on the bottom and a narc of 20 metres. Don't like narcosis, narcosis kills. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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9th June 2005, 19:18	#3 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Quote: (Originally Posted by Decodiver) Down to 90 metres 10/52, only for ease really. After that a mix that will give me a PPO2 of 1.0 on the bottom and a narc of 20 metres. Same as Dave, except 10/50 down to 92m instead since it is a wreck that we dive. Past that, 10/70 to ~115m (max of KISS first stage). 10/50 is easy to mix and top off. Also easy to compute PO2 when diluent flush. However, if inexperience than must exercise caution on/near surface. Deco is 50%.
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9th June 2005, 20:43	#4 (permalink)
Pelagian Multi-Circuit Meg Monkey! Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Optima Join Date: Feb 2005 Location: Leeds, England Posts: 282	10/60 down to 100m, optimsed after that. Seb __________________ 'Because... I was Inverted!'
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10th June 2005, 00:58	#5 (permalink)
Drmike Custom Title Allowed! Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,323	I use 10/50 for everything down to 90m.
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10th June 2005, 07:43	#6 (permalink)
AndyP Mutter Grumble Groan Moan Current Rebreather/s: Inspiration Classic rEvo Other Rebreather/s: rEvo Join Date: Feb 2005 Location: UK Posts: 93	Most of the deep stuff around the south coast is 60 ~ 70M so I tend to run 18/45. I don't like hypoxic gasses unless they are necessary. Andrew
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10th June 2005, 09:37	#7 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,699	Quote: (Originally Posted by AndyP) Most of the deep stuff around the south coast is 60 ~ 70M so I tend to run 18/45. I don't like hypoxic gasses unless they are necessary. Andrew Same as him ATB Mark Chase __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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10th June 2005, 10:27	#8 (permalink)
nigelh New Member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Mar 2005 Location: Brighton, Sussex, UK Posts: 837	Quote: (Originally Posted by AndyP) Most of the deep stuff around the south coast is 60 ~ 70M so I tend to run 18/45. I don't like hypoxic gasses unless they are necessary. As above but 18/40. Stages are 18/40 and 50/0 __________________ nigelh
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10th June 2005, 10:42	#9 (permalink)
*EBT* Apprentice Luddite Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: UK, Brighton Posts: 1,970	If I know its going to be a max of 40m, I prefer 20/40 (better for SCR and deco options). Mostly 10/52 (to 80m, cos its easy to mix and flexible for depth). Deeper stuff, optimised dil.... normally 8/70ish. Choice of dils is partly driven by bailout scenarios.... which differ when your SCR mode isnt as easy.... or you're inside something where your bailout is more critical (Cave). I aim to be using dils that balance flexibility of range, with effectiveness of bailout options (both hyperoxic and scr). /Zak __________________ Eagles May Soar, but weasels don't get sucked into jet engines! Rebreather World Terms of service Real diving t-shirts for real divers
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10th June 2005, 14:30	#10 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 497	Hi, Standards diluent mixes: 11/46 then 8/62 for deeper stuff and standards bail-out mixes as well Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
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