New Test Method for Kinematic Viscosity, Dynamic Viscosity and Density of Liquids by differential pressure capillary viscometer
1. Scope
1.1 This test method covers and specifies a procedure for the simultaneous measurement of the kinematic viscosity, ?, dynamic viscosity, ?, and concurrent measurement of the density, ?, of liquid petroleum products and crude oils, both transparent and opaque.
1.2 The result obtained from this test method is dependent upon the behavior of the sample and is intended for application to liquids for which primarily the shear stress and shear rate are proportional (Newtonian flow behavior).
1.3 This method has an interim precision statement. The precision statement has only been determined for those materials, viscosity ranges, density ranges, and temperatures as indicated in Section 14 on Precision and Bias. The test method can be applied to a wider range of materials, viscosity, density, and temperatures. For materials not listed in Section 14 on Precision and Bias, the precision may not be applicable.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and to determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization 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.
Keywords
kinematic viscosity; dynamic viscosity; viscosity index; density
Rationale
The proposed test method covers the simultaneous determination of kinematic and dynamic viscosity and the concurrent measurement of density by a portable capillary viscometer. This is the first ballot for the proposed test method.
