Hello all,

I'm obviously a new member. I have been tech diving and exploration diving for the last couple of years. About two years ago I decided to start doing homework on CCR's for the purpose of exploration. I found this site and have been using it ever since as a sort of reference in my buying decision. I will post some threads tonight because I have a few questions that you will more than likely be able to help me with.

On my invoice from ISC there are a few terms that I'm not familiar with if you wouldn't mind clearing up the fog a bit it would be appreciated.

STA - I assumed standard

ADV - Automatic Diluent Valve ( the only one I was 100% sure on)

MGB - ??

DIV - ??

thanks fpr the help