Posted by AADIVER on March 21, 2001 at 22:48:58:
In Reply to: Re: Rec tri mix cert. posted by MHK on March 21, 2001 at 15:47:04:
"The benefits of He are virtually undisputed, but basically the only drawback is the cost."
...and the lack of specific tables or computers to figure NDL's, which is why Nitrox will continue to be the mix of choice until He tables and computers come to market for most of us mathematically challenged technophobics.