85m air dive

[Blackwood]

Normoxic refers to containing normal levels of [-]air[/-].

Oxygen, even.

Some people call norm+hyperoxic "triox", "helitrox", etc., reserving the term "trimix" for hypoxic mix.

I call it all trimix, but I won't squabble about labels.

 

[ajduplessis]

Normoxic trimix is still trimix...

No it's not. Normoxic have a MOD of 210ft, with trimix you can drop the O2 below 21, but I am quite sure you know that.

 

[Rainer]

One is a bottom gas (during the working portion of your dive). The others are deco gases.

Wow.

And if the rest of your 21/40 is a single gas (likely N2) it's most definitely a trimix.

Yes, 1.5 is not wierd. 21/40 is normoxic, not trimix. I also use 50% at 69ft and 100% at 20ft (both 1.6 PPO2).

 

[PfcAJ]

A "travel gas" for a 150ft dive? Wat?

Normoxic trimix isn't trimix? Huh?

Stop. Just stop...

 

[Cave Diver]

Oxygen, even.

Ooops. That's what I get for typing too fast.

 

[Blackwood]

Ooops. That's what I get for typing too fast.

No worries. When a thread gets entertaining it's always a race to be the first to respond

 

[ScubaSteve]

 

[Rainer]

Learning to dive on the internet is a bitch.

A "travel gas" for a 150ft dive? Wat?

Normoxic trimix isn't trimix? Huh?

Stop. Just stop...

 

[Steve50]

No it's not. Normoxic have a MOD of 210ft, with trimix you can drop the O2 below 21, but I am quite sure you know that.

perhaps will help

Trimix (breathing gas)

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Contents

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• <LI class="toclevel-1 tocsection-1" sizset="1" sizcache="0">1 Mixes
  • <LI class="toclevel-2 tocsection-2">1.1 Advantages of helium in the mix <LI class="toclevel-2 tocsection-3">1.2 Disadvantages of helium in the mix <LI class="toclevel-2 tocsection-4">1.3 Advantages of reducing oxygen in the mix <LI class="toclevel-2 tocsection-5">1.4 Advantages of keeping some nitrogen in the mix
  • 1.5 Naming
  <LI class="toclevel-1 tocsection-7" sizset="2" sizcache="0">2 Blending
  • 2.1 "Standard" mixes
  <LI class="toclevel-1 tocsection-9">3 Hyperoxic trimix <LI class="toclevel-1 tocsection-10">4 History of trimix as a diving gas <LI class="toclevel-1 tocsection-11">5 See also
• 6 References

Trimix is a breathing gas, consisting of oxygen, helium and nitrogen, and is often used in deep commercial diving and during the deep phase of dives carried out using technical diving techniques.[1][2]
With a mixture of three gases it is possible to create mixes suitable for different depths or purposes by adjusting the proportions of each gas.

 

[jtivat]

Nice bumper stickers! You dive nitrox at 300' ?

My LDS put them on for me I was pissed! But now its kind of a joke as my Trimix instructor was the sticker nazi and wants nothing but MOD on tanks.