Viscosity > Viscosity index > Modifiers > Calculation TBN > Active elements > Density
Goodle Play has a program that allows you to perform calculations on ANDROID devices.
You can download the program here:
https://play.google.com/store/apps/details?id=com.myproj.slshalko.calculation_oil_quality
Below are "screenshots" software module used to calculate the viscosity index of commodity oils range from 2 to 70 cst under ISO 2909-81.
Home form is a box with two fields for data entry and has the following form.
Measured laboratory values of kinematic viscosity at temperatures of 100 and 40 degrees Celsius recorded in the relevant field submitted form.
After clicking "Calculate" inactive field displays the result.
Edit previously entered values and then pressing the "Calculate" get a new result.