This International standard specifies requirements and test methods for stationary dental units, dental patient chairs, and combinations of both regardless of whether they are or not electrically powered. The dental equipment in the scope of this International standard represents an assembly of devices constituting a fixed position system (i.e., not transportable) designed to provide dental staff with the necessary utilities and amenities to provide dental treatment to a patient, in which the utilities and amenities provided typically include compressed air, water or other liquids, suction, electricity, touchand foot-activated controllers for integrated devices, and sometimes work surface(s), tray support(s), cuspidor, dental operating light and/or medical gas and a support and positioning system for the patient during the treatment. It also specifies requirements for the instructions for use, for the technical description, for marking and for packaging. Operator's stools and portable dental equipment is not in the scope of this International Standard.