What is your experience with Carbon Monoxide (CO}?

[Jax]

A discussion on Facebook has been roiling, but one question has not been answered well - What is the real data on Carbon Monoxide (CO)?

This is a question of your *experience* with CO in your tanks, as well as how seriously you test for CO.

Please explain in your post if you are cannot answer this or something is other.

[jlillest]

The hurt my head feels because of the confusing options is different than the time I got a CO hit.

-Jon

[FW]

Someone I once dove with died of CO. A diveshop I get gas from had a compressor issue, and pumped CO into the bank. They had to dump their bank, and get the tanks cleaned. I loaned my CO meter to someone that had CO in their tanks, because they had never seen a high reading before, and wanted to cross check.

And yes, I always check now.

[Jax]

The hurt my head feels because of the confusing options is different than the time I got a CO hit.

-Jon

So you got a CO hit before you began testing?

[GregO]

I test for CO when I test for O2. I have a set of oxycheq sensors and a first stage with spg and LPI hose. With this, I can check both quickly and easily as well as pressure. When I label tanks, I also note that I did a co check.

I have never had a co hit diving or found elevated co in tanks. 70% of my fills are on a compressor I maintain and get quarterly air checks, 20% are on others that I believe (but verify) to be well maintained and 10% are ????

I have had elevated co levels from firefighting and have seen others with it for various reasons. At a minimum, it makes you feel like crap. For an extra minute when I get fills, I like the evidence.

[tbone1004]

I use a cootwo, all of my first stages have lpi's on them so it all get's checked at the same time. Very nice tool to have. I have not personally found anything in my tanks over ambient CO levels, but know of others who have. Not worth the risk

[Sludge]

I used to use the lpi fitting, but I got a DIN flow restrictor (with a bleeder) and it's so much easier now. I just screw it into the cylinder valve and connect the tube to the analyzer.

My CO detector is the Analox unit that you just push against the valve opening. It takes about a minute to analyze for both.

[MORGAN]

I always analyze, and have not yet has a CO reading above zero. I have a Sensorcon CO detector with a DIN fitting and tubing that conducts the gas past a T-piece that goes to the CO detector. While the gas is flowing I put the end of the tubing on the inlet of my Nuvair O2 analyzer and measure CO and O2 simultaneously. Quick and simple.

[Nitrogenius]

I always test..
In Mexico I have found low readings on CO here and there..
surely helps to analyse i front of them..
almost every time the n3xt day levels drop..

[Jack Hammer]

I've found low (2ppm) readings twice and personally know people that e found dangerously high readings (dives aborted). I try to always analyze my gas and encourage others to use my analyzer.

- Jeff