They range from hand-held or fixed, industrial units to fixed, household units. The Nighthawk unit is an example of a unit that has detector readout capabilities. It is often better to know the level you are dealing with to determine your response action. The problem arises when levels exceed 35 PPM and are maintained. This is especially true when levels approach the 200 PPM level.
Carbon monoxide is excreted from the body in exhaled air.
Elimination may be quite rapid during the first few hours after exposure, but complete elimination of carbon monoxide may require 1-2 days. In any event, call for help as soon as possible. In summary, the best preventive measure is to not allow carbon monoxide buildup. However, as a safety measure, having a carbon monoxide detector is a good idea that should be pursued if one is not already in place. Many people worked very hard, over a very short period of time to bring our new cookbook to you.