Once in a while, we’ll often hear about tragic incidents of people suffering from carbon monoxide poisoning, especially during winter times. This is also much more common In big metropolitan cities where high-rises and apartments are a norm. This is because high concentration of these toxic gases could often accumulate and reach dangerous levels in enclosed space.
In addition, doctors & experts warn that whenever one feels nauseous, weak, uncomfortable or unconscious, please make sure to turn off any cooking device & open the window to allow ventilation.
To prevent these accidents, it is important to install CO detector alarms in any enclosed areas & strategic points such as kitchen, basement, bedroom, etc.
Carbon Monoxide Grading Chart
CO Concentration (ppm) |
Symptoms |
50ppm |
Upper limit for average healthy adult in 8 hours |
200ppm |
Nausea & dizziness after 2-3 hours |
400ppm |
Nausea & dizziness in 1-2 hours; may be life threatening after 3 hours |
800ppm |
Nausea & dizziness within 45minutes. Loss of consciousness in 2 hours. Death in 2-3 hours. |
1600ppm |
Nausea & dizziness in 20 minutes; death in 1 hour |
3200ppm |
Nausea & dizziness in 5-10 minutes; death in 25-30 minutes |
6400ppm |
Nausea & dizziness in 1-2 minutes; death in 10-15 minutes |
12800ppm |
Death in 1-3 minutes |
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