Astm D2270 Table. ISO 3448 Viscosity classification. For VI determination according to ASTM D2270 use the double-cell viscometer SVM 4001 separate application report available.
Synthetic oils usually have a higher VI than do mineral oils. If required apply a calibration correction to improve the reproducibility. The kinematic viscosity values depends from temperature calculated by the formulas specified in ASTM D341 Standard Practice for Viscosity-Temperature Charts for Liquid Petroleum Products.
Equations are provided for calculating viscosity index for petroleum products having kinematic viscosities above 70 mm2s cSt at 100C.
2 Supporting data Metrication of Viscosity Index System Method D2270 have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RRD02-1009. Viscosity Index ISO 2909 ASTM D2270-226. Calculator for viscosity index VI according to ASTM D2270 and ISO 2909. 33 Calibration Before measuring the samples perform a calibration.
