ASTM D445-21

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

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STANDARD published on 15.5.2021

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The information about the standard:

Designation standards: ASTM D445-21
Note: WITHDRAWN
Publication date standards: 15.5.2021
SKU: NS-1026836
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Measurement of volume, mass, density, viscosity Petroleum products in general

Annotation of standard text ASTM D445-21 :

Keywords:
dynamic viscosity, kinematic viscosity, viscometer, viscosity,, ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity),75.080 (Petroleum products in general)

Additional information

Significance and Use

5.1?Many petroleum products, and some non-petroleum materials, are used as lubricants, and the correct operation of the equipment depends upon the appropriate viscosity of the liquid being used. In addition, the viscosity of many petroleum fuels is important for the estimation of optimum storage, handling, and operational conditions. Thus, the accurate determination of viscosity is essential to many product specifications.

1. Scope

1.1?This test method specifies a procedure for the determination of the kinematic viscosity, ?, 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, ?, can be obtained by multiplying the kinematic viscosity, ?, by the density, ?, 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 03.

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 mm²/s 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?1.6?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7?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.

2. Referenced Documents

ISO 17025	General Requirements for the Competence of Testing and Calibration Laboratories
	Guideline for Evaluating and Expressing the Uncertainty of NIST Measurement Results http://physics.nist.gov/cuu/Uncertainty/bibliography.html
	Good Measurement Practice for Assignment and Adjustment of Calibration Intervals for Laboratory Standards http://ts.nist.gov/WeightsAndMeasures/upload/GMP_11_Mar_2003.pdf
NIST Special Publication 811
NIST Special Publication 1088
E1-14(2020)	Standard Specification for ASTM Liquid-in-Glass Thermometers
E77-14(2021)	Standard Test Method for Inspection and Verification of Thermometers
E563-22	Standard Practice for Preparation and Use of an Ice-Point Bath as a Reference Temperature
E644-11(2019)	Standard Test Methods for Testing Industrial Resistance Thermometers
E1137/E1137M-08(2020)	Standard Specification for Industrial Platinum Resistance Thermometers
E1750-23	Standard Guide for Use of Water Triple Point Cells
E2593-17(2023)	Standard Guide for Accuracy Verification of Industrial Platinum Resistance Thermometers
E2877-12(2019)	Standard Guide for Digital Contact Thermometers
ISO 3104
ISO 3105	Glass Capillary Kinematic ViscometersSpecification and Operating Instructions
ISO 3696	Water for Analytical Laboratory UseSpecification and Test Methods
ISO 5725	Accuracy (trueness and precision) of measurement methods and results.
ISO 9000
D446-12(2017)	Standard Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers
D1193-06(2018)	Standard Specification for Reagent Water
D1217-20	Standard Test Method for Density and Relative Density (Specific Gravity) of Liquids by Bingham Pycnometer
D1480-21	Standard Test Method for Density and Relative Density (Specific Gravity) of Viscous Materials by Bingham Pycnometer
D1481-17	Standard Test Method for Density and Relative Density (Specific Gravity) of Viscous Materials by Lipkin Bicapillary Pycnometer (Withdrawn 2023)
D2162-21	Standard Practice for Basic Calibration of Master Viscometers and Viscosity Oil Standards
D2170-07	Standard Test Method for Kinematic Viscosity of Asphalts (Bitumens)
D2171-07	Standard Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer
D6071-14(2022)	Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy
D6074-15(2022)	Standard Guide for Characterizing Hydrocarbon Lubricant Base Oils
D6299-23a	Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance (Includes all amendments and changes 12/12/2023).
D6300-24	Standard Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products, Liquid Fuels, and Lubricants
D6617-21	Standard Practice for Laboratory Bias Detection Using Single Test Result from Standard Material
D6708-24	Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material

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