A water mist system is a fire protection system which uses very fine water sprays (i.e. water mist). The small water droplets allow the water mist to control, suppress or extinguish fires by cooling both the flame and surrounding gases by evaporation.
Carbon dioxide or CO2 is a colorless, odorless, electrically non-conductive gas that is highly efficient as a fire suppression agent.
When applied to a fire, CO2 provides a heavy blanket of gas that reduces the oxygen level to a point where combustion cannot occur. Since carbon dioxide is a gas, there is no clean-up associated with a CO2 fire suppression system discharge.