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What is the rational behind always testing ean; but assuming air is OK?
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What is the rational behind always testing ean; but assuming air is OK?
Seems to me that if a shop has both Nitrox and air tanks being handled in the same area, there is NO good rationale for not testing tanks that are supposed to contain air.
My training was that either you did the test yourself or watched it being done and logged. You never just grab a tank and trust it. That's why I don't use nitrox.
---------- Post added February 17th, 2015 at 11:08 AM ----------
Since the O2 costs, they are unlikely to be filling air with nitrox.
I rarely dive nitrox, but my experiences at several shops has been the same as yours. I suppose it makes some sense to buy your own analyzer if you dive nitrox a lot. Your own could also be out of whack but it is unlikely both yours and the shop's would both be.I don't think I've ever gotten a nitrox tank from a dive op where I was not handed an analyzer or watched the dive shop employee do the analysis right in front of me. I don't think you need to buy your own.
I agree completely that it is foolhardy to take another person's word for something so critical to your own survival. Even being off by a few points can affect your no deco time or MOD dramatically.