TDI Advanced Nitrox Exam

[Rhone Man]

I don't think there is a specific pass-mark. If you get any answers wrong then your instructor is supposed to "discuss" it with you to make sure you understand the relevant point.

From recollection though, the TDI exams are all pretty damn easy.

Except for that one blatantly unfair question at the end of the Extended Range exam...

 

[Rhone Man]

Incidentally, why take AENX without DP?

I understand you aren't old enough for the latter, but why not wait to tske them together? The real advantage of hot mixes is the acceleration of deco. Not many people out there are using >40% as bottom mix.

Not an answer, but a comment: I have seen plenty of places that will let you engage in deco diving without formal training. But I have never seen anywhere which would give you a 41% mix without the right card.