GOST R 55394-2013 Unused lubricating base oils and asphaltene free petroleum fractions. Determination of polycyclic aromatics by dimethyl sulphoxide extraclion method and refractive index measuring
2013GOST R 55394-2013 Unused lubricating base oils and asphaltene free petroleum fractions. Determination of polycyclic aromatics by dimethyl sulphoxide extraclion method and refractive index measuring