
23
CO A
LARM
CI 200
Concentration* Exposure and Symptoms
1600 ppm
Severe headache, dizziness and nausea within 20 minutes, fatal
within 1 hour
3200 ppm
Severe headache, dizziness and nausea within 5 to 10 minutes, fatal
within 25 to 30 minutes
6400 ppm
Severe headache, dizziness and nausea within 1 to 2 minutes, fatal
within 10 to 15 minutes
12800 ppm
Fatal within 1 to 3 minutes
* The concentration indicates the levels of carbon monoxide in the ambient air in
ppm
(parts
per million).