Suction Unit SMT CEL-1 is used for suction and filtration of the air poluted by the dry dust or aerosol coming of medical laser, electrosurgery or cryosurgery. Suction unit is used for the work in the standard ambient up to 40°C and for the ambient It is prohibited to use this unit for the suction of: - flammable and explosive materials (neither on places, where these can appear) - flaming, smoldering or smoking objects (cigarettes smoke, dangerous dusts or for example smoldering or smoking rags). without the risk of explosion.