Standard Test Method D445 Overview

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Study Notes

This standard specifies a procedure for determining the kinematic viscosity of liquid petroleum products, both transparent and opaque.
The kinematic viscosity is measured by the time it takes for a specific volume of liquid to flow through a calibrated glass capillary viscometer under gravity.
This test method is applicable to liquids that exhibit Newtonian flow behavior, where shear stress and shear rates are proportional.
The procedure and precision values for residual fuel oils, exhibiting non-Newtonian behaviour under certain conditions, have been included.
The range of kinematic viscosities covered by this test method is from 0.2 mm2/s to 300 000 mm2/s.
The dynamic viscosity can be calculated by multiplying the kinematic viscosity by the density of the liquid.
For measuring kinematic viscosity and viscosity of bitumens, refer to Test Methods D2170 and D2171

Mercury and mercury-containing products are hazardous to health and corrosive to materials.
Handle mercury and mercury-containing products with caution.
Consult the applicable product Safety Data Sheet (SDS) for further safety information.
The sale of mercury or mercury-containing products may be prohibited by local or national laws.
Users are responsible for determining the legality of sales in their respective locations.

This international standard was developed in accordance with internationally recognized principles on standardization.
These principles were established by the World Trade Organization Technical Barriers to Trade (TBT) Committee in their Decision on Principles for the Development of International Standards, Guides and Recommendations.

This standard references ASTM Standards, including D3... (the text does not specify which ASTM standards are referenced).

This standard (D445) outlines a method for determining the kinematic viscosity (ν) of liquid petroleum products.
It applies to both transparent and opaque liquids.
The method involves measuring the time for a specific volume of liquid to flow through a calibrated glass capillary viscometer.
This standard covers a range of kinematic viscosities from 0.2 mm2/s to 300 000 mm2/s.
The dynamic viscosity (η) can be calculated by multiplying the kinematic viscosity (ν) by the liquid's density (ρ).
Additional information relates to the measurement of viscosity in bitumens, the connection to ISO 3104, and the distinction between Newtonian and non-Newtonian fluid behavior.
The standard addresses safety concerns related to mercury and mercury-containing products, highlighting potential health hazards and legal restrictions.

The international standard was developed following internationally recognized principles on standardization.
These principles were established in the Decision on Principles for the Development of International Standards, Guides, and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.