Quote: (Originally Posted by
Brainx3)
. With limited experience instructors they might not want to tell you that you can be more safe with some helium in the mix because simply is doesn't say so in the standards.
...or they may be managing their liability in an increasingly litigious society.
Given that folks on a mod 1 arent going deep, theres only hassle in using helium with students if you dont need to. The best way to understand what makes sense is to see what they dive when they're not teaching. Its usually a trimix dil... and before people rush to bleat about evil instructors, remember that we're all part of this society.