Bubblesong
Contributor
I insisted on testing my Nitrox tanks before accepting them, two of them only had 2,000, instead of 3,000, so right there I was glad I didn't just accept them!
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That is a lengthy article to appreciate fully, but I gather than the message is that the state has worked to clean up its air, and one could expect exposures of 1 to 4ppm. I think that range could be expected in most urban areas across the US.I live in NJ and found this reference that indicates atmospheric CO can range from 1 to almost 4 ppm - so having tanks test up to 3 ppm would not be surprising (or avoidable), would it?
https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.njaqinow.net/App_Files/2012/Carbon%20Monoxide%202012.pdf&ved=0ahUKEwin-p-3i-LUAhULcj4KHQG7D1QQFggdMAA&usg=AFQjCNGqCw54UiPsj5ImNBKxNaSD2RfZPw
The filter after the compressor should be turning the CO into CO2.That is a lengthy article to appreciate fully, but I gather than the message is that the state has worked to clean up its air, and one could expect exposures of 1 to 4ppm. I think that range could be expected in most urban areas across the US.
Professional fill stations can filter their intake air to reduce CO levels before compression tho. How accepting you chose to be is a personal call.
Color me corrected, thanks.The filter after the compressor should be turning the CO into CO2.
What is your limit that throws up a red flag?
Yep, Hopcalite is our friend and it works well if maintained and fed really dry air so maintaining the desiccant in the filter is also critical. CO after the filter may also mean other nasties that we aren't testing for and excessive moisture.The filter after the compressor should be turning the CO into CO2.
To be completely honest, I'd even test it if it were my own center and I were responsible for the compressor. Currently trying to buy a CO analyser as someone took a CO hit nearby, got saved by his buddy. If that happens to me, not so lucky, because there's no buddy.I test EVERY single tank that comes from filling outside our dive center.
I live in NJ and found this reference that indicates atmospheric CO can range from 1 to almost 4 ppm - so having tanks test up to 3 ppm would not be surprising (or avoidable), would it?