I'm not an expert in this. I can only submit the problem on this board to solicit other people's experiences.
After reading this article I would look for a minimum reading of 10 p.p.m.
The aeromedix (2002) model originally displayed from 5 p.p.m.
but the new model (2004) displays only from 10 p.p.m. ???
The plastic bag and this detector is the best solution so far but I'm still looking.
Don't want to seem to cautious but when you've known an experienced diver that died because of contaminated air and are diving with your teenage son you don't feel like being told that old compressor in the back is "No problemo" without any means of checking it.
Safe diving.
After reading this article I would look for a minimum reading of 10 p.p.m.
The aeromedix (2002) model originally displayed from 5 p.p.m.
but the new model (2004) displays only from 10 p.p.m. ???
The plastic bag and this detector is the best solution so far but I'm still looking.
Don't want to seem to cautious but when you've known an experienced diver that died because of contaminated air and are diving with your teenage son you don't feel like being told that old compressor in the back is "No problemo" without any means of checking it.
Safe diving.