dive shop wants advanced nitrox for mixes other than 32 or 36

[gizmo1972]

padi and ssi do a VERY BASIC course for just single mixes 32% 36% (no tables and single set computer ) waste of money courses lol

 

[Subcooled]

I have attended a PADI EANx course and we were told how to calculate the maximum operating depth for any mix up to 40%. Maybe the courses vary a bit?

 

[dfx]

And yes, oxygen seems to have greater narcotic potential than nitrogen, so the whole concept of EAD of a nitrox mix is misleading.

Last I heard, EAD had nothing to do with narcosis and everything to do with NDL.

---------- Post added October 26th, 2013 at 10:03 PM ----------

padi and ssi do a VERY BASIC course for just single mixes 32% 36% (no tables and single set computer ) waste of money courses lol

I don't know about PADI, but the SSI Nitrox handbook I have here suggests nothing like that.

 

[jazzymusicman]

padi and ssi do a VERY BASIC course for just single mixes 32% 36% (no tables and single set computer ) waste of money courses lol

can you provide more information? i wasn't able to find that anywhere

 

[tracydr]

padi and ssi do a VERY BASIC course for just single mixes 32% 36% (no tables and single set computer ) waste of money courses lol

I didn't have a basic course. My PADI course, in 2007, included all the formulas to be able to calculate my mixes for any percent nitrox that I would like to dive. It was certainly comprehensive and took me quite a few hours to complete the knowledge reviews, problems and test. I feel quite comfortable doing nitrox calculations and using any mix from 21%-40%. I also did two dives for my card.
I've always wondered how resorts can offer this same course in one hour,though.

---------- Post added October 26th, 2013 at 08:53 PM ----------

If they live in a PADI bubble, then no.
Advanced Challenging Technical Diving: DSAT TecRec Scuba Diving Courses - PADI Scuba Diving Training Organization

By the way, do YOU know to what depth the Narcosis Management Level IV certification allows one to dive?

---------- Post added October 26th, 2013 at 07:13 PM ----------



Laws of physiology.

And yes, oxygen seems to have greater narcotic potential than nitrogen, so the whole concept of EAD of a nitrox mix is misleading.

Maximum operating depth, MOD, still is relevant. Very relevant.

Are you talking about PSAI Narcosis Management classes? I have no interest in learning to go any deeper than 130 feet on air. In fact, I'm wanting to go into the tech classes so that I can start using trimix between 100-130 feet. But I think level IV is about 180feet? No thank you!

 

[PfcAJ]

When you test the mix after your tanks are filled, be a pain in the butt if it is 31% or 33%. After all, your table says 32% and they better fix that fill!!!

Analyzers aren't even that accurate. +-1% is more than close enough.

No reason to be a pain in the butt over a single percentage.

 

[DevonDiver]

Analyzers aren't even that accurate. +-1% is more than close enough.

No reason to be a pain in the butt over a single percentage.

Correct - that is mentioned in most of the agency training courses. +/- 1% does not require re-planning the dive. Beyond that 1% variation does.

 

[mrokern]

padi and ssi do a VERY BASIC course for just single mixes 32% 36% (no tables and single set computer ) waste of money courses lol

Not that I've seen...link?

My nitrox card is PADI, good up to 40%.

 

[gcarter]

None of this is all that complicated to calculate for rec diving- I keep this cheat sheet in my log book binder, but the math is not that hard.



Edit: converting the formulas to metric use is pretty dead simple too.

Edit: I actually managed to learn that with PADI too!

 

[DevonDiver]

padi and ssi do a VERY BASIC course for just single mixes 32% 36% (no tables and single set computer ) waste of money courses lol