Testing of mineral oils; measurement of refractive index with the precision refractometerEssais sur huiles minérales; mesure de l'indice de réfraction au moyen d'un réfractomètre de précisionZusammenhang mit der von der American Society for Testing and
DIN 51423-1:1975 history
2010DIN 51423-1:2010-02 Testing of mineral oils - Part 1: Measurement of the relative refractive index with the precision refractometer
2010DIN 51423-1:2010 Testing of mineral oils - Part 1: Measurement of the relative refractive index with the precision refractometer
1975DIN 51423-1:1975 Testing of mineral oils; measurement of refractive index with the precision refractometer