Wow, so does this mean that technically, a Tech3/Cave3 diver is not certified to dive say, EAN28?
Tom
To take you seriously for a moment (it'll be a brief one, I promise ), I suppose not, from a strictly technical viewpoint, since 28% is not a standard GUE mix, and GUE preaches ONLY standard mixes.
Of course, there's always the wiggle room granted by the "thinking diver" provisos.
And reality is a whole different ball of wax, of course.
Also, since I'm nowhere near Tech3/Cave3, and I'm even certain what their standards are, I could be off on this.