What's in your pony?

[idocsteve]

Did this drill, way back when..sure it works...do it for ? fun...ya'll get flue like sick from breathin' in yukky air .. even if you did sanitize completely (inside) your B/C...water intrudes...fresh/sea...stuff's in the water..
Absolutely works and will get you back up to the surface..yes it's available air..just not clean..you've survived...now your sick.

Better sick than dead. Sounds like a great idea and I wonder why it isn't promoted more often as an alternate emergency procedure.

 

[syntaxerrorsix]

Better sick than dead. Sounds like a great idea and I wonder why it isn't promoted more often as an alternate emergency procedure.

Because there is no way to purge the water in the tube before you inhale it and there is likely very little to inhale even if you could purge it.

Better to make a CESA than to inhale a lung full of water and waste time better spent swimming to the surface.

 

[scubamama5]

Rather be sick than dead myself....I'm not going to risk my students health, or mine, just to breathe of a B/C...Go ahead, try it on your own time.
CESA is the best option when alone and deep..can drop weight on the way..if you can't lift off..well then drop the weights.. now..blow and go..
If you just can't wait to breathe as your hummin' up...use the b/c...don't suck it like a straw! You'll choke yourself.
The conversation had turned from "What's in your Pony" what happened?? Do like sharein' thoughts.
Thanks.

 

[suprane]

Most of the time mine is filled with 21 to 23 nitrox,Jim Breslin

Uhhhh??... (He said while scratching his head.)..... "21% Nitrox"??... Did I miss something here?... Could have sworn that was,,,,, Uhhh, oh yeah!..... AIR!!! :confused6:

 

[Superlyte27]

Uhhhh??... (He said while scratching his head.)..... "21% Nitrox"??... Did I miss something here?... Could have sworn that was,,,,, Uhhh, oh yeah!..... AIR!!! :confused6:

NEWS FLASH!!!
Air is NITROX

 

[Dr Wu]

Uhhhh??... (He said while scratching his head.)..... "21% Nitrox"??... Did I miss something here?... Could have sworn that was,,,,, Uhhh, oh yeah!..... AIR!!! :confused6:

Depends on how pedantic you want to get.

The term "NITROX" refers to any gas which is a combination of Nitrogen and Oxygen regardless of the mix.

Also, air is 20.9% O2 so 21% EAN would be "enriched" by .1% O2.

 

[idocsteve]

Depends on how pedantic you want to get.

The term "NITROX" refers to any gas which is a combination of Nitrogen and Oxygen regardless of the mix.

Also, air is 20.9% O2 so 21% EAN would be "enriched" by .1% O2.

You're half right.

Nitrox refers to gas that has been enriched to a concentration of oxygen that is greater than air, so you're correct that 21% would be considered enriched and can be referred to as Nitrox.

 

[Wookie]

Found my pony full to the diptube with water this week. Don't know how it got there, sure screwed up my regulator, though. It did breath OK for those couple of breaths while shooting a bag.

 

[Rainer]

Not sure where the "enrichment" part is coming from. If a chemist refers to a "nitrox" mixture, he's speaking about a gas with only nitrogen and oxygen. That's the definition I've always assumed as well (even as applied to diving). I'm perfectly happy to call 18% (18% oxygen, 72% nitrogen) a "nitrox" blend. Could even see a potential use for such hypoxic nitroxes for deeper dives where you just don't want / can't get He, but want to limit O2 exposure.

For me "nitrox" != EAN.

Nitrox refers to gas that has been enriched to a concentration of oxygen that is greater than air, so you're correct that 21% would be considered enriched and can be referred to as Nitrox.

 

[suprane]

Depends on how pedantic you want to get.
The term "NITROX" refers to any gas which is a combination of Nitrogen and Oxygen regardless of the mix.
Also, air is 20.9% O2 so 21% EAN would be "enriched" by .1% O2.

Oh gee!... Let's split hairs! For the purpose of "routine" conversation "air" is termed to be 21%!.... How many people factor in trace gasses?... I mean, really?!... Give me a break!
Also, the term "Nitrox" is commonly used alternatively with the term EAN. which (as we all know.... Don't we?) is a concentration of O2 greater than normal atmospheric levels (ie: 21%.... Or, by your precise calculations 20.9%!)
If we except your premise, I guess that would mean that every one who gets a Basic OW certification is automatically Nitrox Certified!... Because as you pointed out, "Nitrox refers to any gas which is a combination of Nitrogen and Oxygen"!... And, after all, they are now certified to dive a breathing mixture of the two!
I mean, really. let's simply call 21% "Nitrox" what it is commonly referred to... AIR!