PSA Advanced Nitrox Diver help please

[JamesW]

Originally Posted by hebails

I am in LOndon so Mark is local for me

Go with Mark Powell.
Thanks

[Bardo]

Originally Posted by hebails

I am in LOndon so Mark is local for me

If Mark is on your doorstep then I'd say he definately sounds like your best bet...

[tootricky]

Originally Posted by Bardo

I believe both PSA and TDI Advanced Nitrox does give you access to 100% oxygen but the important thing to consider is that - in TDI's case, at least - this is limited to backgas mixes (pointless, eh!) and it's also a *no decompression* ticket (at least that's what my TDI Advanced Nitrox ticket says). If you want to use oxygen-rich deco gases to perform accelerated decompression, you need to do the Deco Procedures course too. Alternatively, do an IANTD Advanced Recreational Trimix course and get all of this plus access to helium!

IANTD *used* to give divers access to 50% max for decompression mixes but this has recently been changed. Divers can now use 100% O2 for deco mixes.

For most people, of course, access to 100% isn't really an issue but it's worth having should you choose to go on to dive a closed circuit rebreather.

Not quite backgas mixes only. I believe you can deco on whatever mix you like but only on a backgas profile. TBH, I'm not sure there are that many who do AN & DP seperately unless they already have an Advanced Nitrox ticket from another agency!