<p>ISO 2909:2002 describes two procedures for calculating the viscosity index (VI) of petroleum products and related materials, such as lubricating oils, from their kinematic viscosities at 40 °C and 100 °C.</p>
<p>Procedure A is applicable to petroleum products of viscosity index up to and including 100.</p>
<p>Procedure B is applicable to petroleum products of viscosity index 100 or greater.</p>
<p>ISO 2909:2002 does not apply to petroleum products with kinematic viscosities less than 2,0 mm<sup>2</sup>/s at 100 °C. It applies to petroleum products with kinematic viscosities between 2 mm<sup>2</sup>/s and 70 mm<sup>2</sup>/s at 100 °C. Equations are provided for calculating the viscosity index of petroleum products having kinematic viscosities above 70 mm<sup>2</sup>/s at 100 °C.</p>
Registration number (WIID)
29953
Scope
<p>ISO 2909:2002 describes two procedures for calculating the viscosity index (VI) of petroleum products and related materials, such as lubricating oils, from their kinematic viscosities at 40 °C and 100 °C.</p>
<p>Procedure A is applicable to petroleum products of viscosity index up to and including 100.</p>
<p>Procedure B is applicable to petroleum products of viscosity index 100 or greater.</p>
<p>ISO 2909:2002 does not apply to petroleum products with kinematic viscosities less than 2,0 mm<sup>2</sup>/s at 100 °C. It applies to petroleum products with kinematic viscosities between 2 mm<sup>2</sup>/s and 70 mm<sup>2</sup>/s at 100 °C. Equations are provided for calculating the viscosity index of petroleum products having kinematic viscosities above 70 mm<sup>2</sup>/s at 100 °C.</p>
