ASTM-D445 2010

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D445-10 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

Published By	Publication Date	Number of Pages
ASTM	2010	11

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Description

ASTM D445-10

Historical Standard: Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

ASTM D445

Scope

1.1 This test method specifies a procedure for the determination of the kinematic viscosity, ν, of liquid petroleum products, both transparent and opaque, by measuring the time for a volume of liquid to flow under gravity through a calibrated glass capillary viscometer. The dynamic viscosity, η, can be obtained by multiplying the kinematic viscosity, ν, by the density, ρ, of the liquid.

Note 1—For the measurement of the kinematic viscosity and viscosity of bitumens, see also Test Methods D2170 and D2171.

Note 2—ISO 3104 corresponds to Test Method D445.

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 rates are proportional (Newtonian flow behavior). If, however, the viscosity varies significantly with the rate of shear, different results may be obtained from viscometers of different capillary diameters. The procedure and precision values for residual fuel oils, which under some conditions exhibit non-Newtonian behavior, have been included.

1.3 The range of kinematic viscosities covered by this test method is from 0.2 to 300 000 mm²/s (see Table A1.1) at all temperatures (see 6.3 and 6.4). The precision has only been determined for those materials, kinematic viscosity ranges and temperatures as shown in the footnotes to the precision section.

1.4 The values stated in SI units are to be regarded as standard. The SI unit used in this test method for kinematic viscosity is mm²/s, and the SI unit used in this test method for dynamic viscosity is mPa·s. For user reference, 1 mm²/s = 10^-6 m²/s = 1 cSt and 1 mPa·s = 1 cP = 0.001 Pa·s.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

dynamic viscosity; kinematic viscosity; viscometer; viscosity;: Calibration–petroleum analysis instrumentation; Dynamic viscosity; Electrical insulating petroleum products; Kinematic viscosity; Viscosity–petroleum products

ICS Code

ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)

DOI: 10.1520/D0445-10

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Summary of Test Method Significance and Use Apparatus
3	Reagents and Materials Certified Viscosity Reference Standards Calibration and Verification
4	General Procedure for Kinematic Viscosity Procedure for Transparent Liquids TABLE 1
5	Procedure for Opaque Liquids Cleaning of Viscometer
6	Calculation Expression of Results Report Precision
7	Keywords A1. VISCOMETER TYPES AND CERTIFIED VISCOSITY REFERENCE STANDARDS A1.1 Viscometer Types TABLE A1.1
8	A2. KINEMATIC VISCOSITY TEST THERMOMETERS A2.1 Short-Range Specialized Thermometer A2.2 Calibration TABLE A1.2 TABLE A2.1 TABLE A2.2
9	FIG. A2.1
10	A3. TIMER ACCURACY A3.1 A4. CALCULATION OF ACCEPTABLE TOLERANCE ZONE (BAND) TO DETERMINE CONFORMANCE WITH A CERTIFIED REFERENCE MATERIAL A4.1 A4.2 A4.3 A4.4 A4.5

Additional information

Standard Title	D445-10 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
Published Code	ASTM
Publication Date	2010
Pages Count	11