This part of ISO 10079 specifies safety and performance requirements for manually powered suction equipment intended for oro-pharyngeal suction. It applies to equipment operated by foot or by hand or both. Annex D illustrates the three parts of ISO 10079 by providing a schematic for typical systems.The commonest use of manually powered suction is in situations outside of health care settings often described as field use or transport use. Use in these situations may involve extreme conditions of weather or terrain. Additional requirements for suction equipment intended for field and/or transport use are included in this part of ISO 10079.This part of ISO 10079 does not apply to the following:a) end pieces such as suction catheters, Yankauer sucker and suction tips;b) dental suction equipment;c) mucus extractors, including neonatal mucus extractors.