Ok, so I purchased an Analox EII CO analyzer. On page 9, section 2.6 of the User Manual it states;
"The maximum allowable CO exposure levels for air diving vary in the standards set from one country to another, so you may want to consider referring to the applicable safety standards for your country to determine your maximum allowable CO exposure level.
However, Analox advises that the maximum allowable CO exposure levels should be to that stated in the British Health and Safety Executive (HSE) DVIS9(rev 1) document (Diver's breathing air standard and the frequency of examination and tests (Diving Information Sheet No9 (Revision 1)).
This states that: Carbon monoxide content shall be as low as possible but not exceed 3 ppm. (For air diving to 50 meters)"
FYI 50 meters = 164 feet.
So my question is, for those of you who have been using CO analyzers;
What levels are you "normally" finding?
What, if any do you find "acceptable"?
I was initially under the impression that zero was the only "acceptable" level, am I expecting too much?
Thanks for your input.