Diver-Drex
Contributor
All of my cyclinders are labeled as Nitrox cyclinders regardless of the contents. The two places I get fills use only grade e air so the O2 VIP and shoulder band remain valid. But it doesn't mean they are not filled with 21% at times.
I dive EAN on a lot of shallow dives when assisting with students. Typically we'll split large groups up, which can mean 6 "dives" in a day and a lot of ascents when doing CESAs, air sharing ascents and 5 point ascents. Not to mention retrieving students that surface for various reasons. EAN adds some margin for safety.
I dive EAN on a lot of shallow dives when assisting with students. Typically we'll split large groups up, which can mean 6 "dives" in a day and a lot of ascents when doing CESAs, air sharing ascents and 5 point ascents. Not to mention retrieving students that surface for various reasons. EAN adds some margin for safety.