2020UNE-EN ISO 307:2020 Plastics - Polyamides - Determination of viscosity number (ISO 307:2019)
2013UNE-EN ISO 307:2007/A1:2013 Plastics - Polyamides - Determination of viscosity number - Amendment 1: Corrections, and update to reference to JIS K 6920-2 (ISO 307:2007/Amd 1:2013)
2007UNE-EN ISO 307:2007 Plastics - Polyamides - Determination of viscosity number (ISO 307:2007)