Jimmy B
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Lots of info here, just incase your all getting your heads full and think that your're getting "bad air" in Ontario. Just remember that Ontario has one of the highest standards in the World.
Compared to other spots where you're diving. Now remember, (I'm stressing this). The following is the National Standard for a couple of Countries.
CDA US EUR (Low - High) MEX
Carbon Monoxide PPM 5 20 10-50 NS
Carbon Dioxide PPM 500 500 500-1000 NS
Hydrocarbons PPM 25 25 NS-30 NS
Trichlorotrifluorethylen PPM Only Canada Tests
Dichlorodfiluorethylen PPM Only Canada Tests
Cloorodifluoromethane PPM Only Canada Tests
Nitrogen Dioxide PPM .3 NS NS - .5 NS
Oil mg/M3 3 5 .3 - 5 NS
Max particle Size Free ND N/A - 50 Microns NS
Water Vapor mg/M3 50 ND NS - 100 NS
Odour None NO NO - NIL NS
Other ND ND ND - <1% NS
O2 Content 20-22 20-22 20-23 NS
ND = No Data
NS = No Standard
NO = Not objectable foul smelling
The way I understand it also is that this is the National standard read lowest standard allowed in that Country.
JB
Compared to other spots where you're diving. Now remember, (I'm stressing this). The following is the National Standard for a couple of Countries.
CDA US EUR (Low - High) MEX
Carbon Monoxide PPM 5 20 10-50 NS
Carbon Dioxide PPM 500 500 500-1000 NS
Hydrocarbons PPM 25 25 NS-30 NS
Trichlorotrifluorethylen PPM Only Canada Tests
Dichlorodfiluorethylen PPM Only Canada Tests
Cloorodifluoromethane PPM Only Canada Tests
Nitrogen Dioxide PPM .3 NS NS - .5 NS
Oil mg/M3 3 5 .3 - 5 NS
Max particle Size Free ND N/A - 50 Microns NS
Water Vapor mg/M3 50 ND NS - 100 NS
Odour None NO NO - NIL NS
Other ND ND ND - <1% NS
O2 Content 20-22 20-22 20-23 NS
ND = No Data
NS = No Standard
NO = Not objectable foul smelling
The way I understand it also is that this is the National standard read lowest standard allowed in that Country.
JB