| The rows stem around a fundamental misunderstanding of GUE's standard triox - 30/30
If you dive regularly in the UK you may be right in thinking that it's application is not that great. It is a bit rich for the mid 30s but has too much O2 in it to go deeper.
It was not designed for ocean diving though and I've only used it once or twice here for very specific reasons. It was designed for florida caves which rarely go below 30 metres but pump with massive flow which make working very hard. the additional helium makes it easier to stay alert and cope with the complexities of the dive.
Tri-ox is rightly what others describe as Hyperoxic tri-mix - more than 21 per cent. Use it when you would like to reduce the END of a dive but retain O2 exposure.
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