Quality Gas Monitoring Systems for a Global Market Since 1980

0800 772 0894

Carbon Monoxide (CO) Gas Safety Information


Key Characteristics. These are guidelines only – refer to published documents. OX-AN® cannot be held responsible in any way for the use of this data.

Technical Characteristics of Carbon Monoxide (CO)

Description: Carbon Monoxide is a product of – Incomplete combustion of carbon based materials – Diesel engines and detonated explosives. It is highly toxic, reducing the bloods ability to carry oxygen throughout the body.
Properties: FlammableColourlessTasteless


Lighter than Air – Relative density 0.967

Explosive range – 12.5% – 74%

Risks: Headaches, dizziness, nausea, unconsciousness and death.
0 PPM Desirable Level
9 PPM Maximum indoor air quality level
30 PPM Long term exposure limit. Max. concentration for continuous exposure in any 8 hour period
200 PPM Short term exposure limit (15 Minute reference period) Slight Headache, tiredness, nausea after 2-3hrs
400 PPM Frontal headaches 1 to 2 hrs, life threatening after 3 hrs
800 PPM Dizziness, nausea and convulsions within 45 minutes. Unconsciousness within 2 hours. Death in 2 to 3 hours
1,600 PPM Headache, dizziness, nausea within 20 minutes. Can prove fatal within 1 hour
3,200 PPM Headache, dizziness, nausea within 10 minutes. Can prove fatal within 30 minutes


Further information about carbon monoxide can be found here

Visit our industrial oxygen monitor page.

Find information about about carbon dioxide here