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Under normal conditions, +/- 300 ppm (0.03 %) of the atmosphere is made up of carbon dioxide. If the carbon dioxide concentration in the atmosphere exceeds 5000 ppm (O,5 %), the air is displaced, which results in a considerable decline in the oxygen content of the atmosphere. In case of inhallation, breathing acceleration will arise and a slight form of anaesthesia may occur. The individual tolerance may vary greatly, depending on the physical condition of a person an on the temperature and the humidity of the atmosphere. Yet we can consider the following table as a general survey of the effects caused by the inhalation of different concentrations of carbon dioxide: See Chart
See Safety Requirements
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