Carbon Monoxide Gas
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-500 ppm (mg/l) 1000 ppm max |
35 ppm (mg/l) | 50 ppm (mg/l) |
Chlorine Gas
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 250 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
Hydrogen Gas
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-500 ppm (mg/l) 50,000 ppm max or 5% |
35 ppm (mg/l) | 50 ppm (mg/l) |
Hydrogen Chloride Gas
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 100 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
Hydrogen Cyanide
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 100 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
Hydrogen Sulphide
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 200 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
Nitric Dioxide
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 20 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
Nitric Oxide
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 100 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
Oxygen
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-25% |
19.5% | 16% |
Ozone
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 20 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
Sulphur Dixoide
| Gas | Standard Range | Warning Trip Point | Danger Trip Point |
 |
0-10 ppm (mg/l) 250 ppm max |
1.0 ppm (mg/l) | 3.0 ppm (mg/l) |
