This International Standard specifies four types of standard connectors for use between dental hand-pieces and the flexible hoses of the equipment which supply the handpieces with water, air and light, and provide for the exhaust. The purpose of this International Standard is to achieve reliable interchangeability between hoses and handpieces.
DS/EN 29168:1994 history
2009DS/EN ISO 9168:2009 Dentistry - Hose connectors for air driven dental handpieces