Well the start of the diving holiday has been interesting. I discovered on my first tank that my analyzer does in fact read above 001 when I got a read of 15ppm on the first tank I tested. Immediately rejecting it, I managed to find two tanks that were down around 7ppm. As the dive was only a first checkout dive to 5m I took them, but was not happy. Stern words with the owner resulted in him extending the snorkel on the compressor input another 5m higher.
Now after the change, the tanks are reading 5ppm. But still, I've never seen a tank over 1 before, and can't help but feel that there is still something wrong with his filter setup.
It's a petrol compressor, but I still feel that the hopcalite should be brining it close to zero.
Am I just being paranoid? Where exactly should I stop worrying about it? Is anything under 10ppm going to be insignificant for rec dives below 30m? What should my ppm per atm cutoff actually be?
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