The concentration levels of Carbon Monoxide.
Concentration Symptoms 35 ppm (0.0035%);
Headache and dizziness within six to eight hours of constant exposure.
100 ppm (0.01%);
Slight headache in two to three hours.
200 ppm (0.02%);
Slight headache within two to three hours; loss of judgment.
Frontal headache within one to two hours.
800 ppm (0.08%);
Dizziness, nausea, and convulsions within 45 min; insensible within 2 hours.
1,600 ppm (0.16%);
Headache, increased heart rate, dizziness, and nausea within 20 min; death in less than 2 hours.
3,200 ppm (0.32%);
Headache, dizziness and nausea in five to ten minutes. Death within 30 minutes.
6,400 ppm (0.64%);
Headache and dizziness in one to two minutes. Convulsions, respiratory arrest, and death in less than 20 minutes.
12,800 ppm (1.28%);
Unconsciousness after 2–3 breaths. Death in less than three minutes.
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