I'm planning to start tech training some time in the near future, depending on scheduling everything with the pandemic. From talking to several people, they all use Atomic M1s for their back mount double regs because they're O2 clean and rated for higher percentage O2 right out of the box. After thinking about this for a little bit, it didn't make sense, because you'd need O2 clean for a deco bottle, not back gas. I asked one friend who has his set up this way, he didn't know the reason, and said it's because that's what an instructor recommended to him
Is there any reason to use something like an Atomic M1 for back gas, or is a properly configured Atomic ST1 or similar fine for doubles, and use an M1 for higher percentage O2 stage bottle?
Is there any reason to use something like an Atomic M1 for back gas, or is a properly configured Atomic ST1 or similar fine for doubles, and use an M1 for higher percentage O2 stage bottle?