CSN EN ISO 22569 This document specifies requirements, test methods, instructions for use and marking for multifunction handpieces (colloquially called "syringes") intended to be used in the oral cavity of the patient. This document does not apply to dental handpieces and motors, intraoral cameras, dental polymerisation lamps, powered scalers, powder jet handpieces, prophy handpieces, suction cannulas and saliva ejectors. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.