This International Standard specifies the dimensions and other requirements forThe most commonly usedpolishers which are used atThe working place of the dentist and/or inThe dental laboratory.
EN ISO 21671:2006 history
2011EN ISO 21671:2006/A1:2011 Dentistry - Rotary polishers - Amendment 1 (ISO 21671:2006/Amd 1:2011)