ASTM E2975-23

Standard Test Method for Calibration or Calibration Verification of Concentric Cylinder Rotational Viscometers

SIGNIFICANCE AND USE
5.1 This test method may be used to calibrate or verify calibration of a rotational viscometer with coaxial spindle geometries.
SCOPE
1.1 This test method describes the calibration or calibration verification of rotational viscometers in which the rotational element is immersed in a Newtonian reference material under ambient temperature conditions. The method is applicable to rotational-type viscometers where a constant rotational speed results in a measured torque generated by the test specimen, and to Stormer viscometers where a constant applied torque results in a measured rotational speed. It is not intended for cone-and-plate or parallel plate viscometers.  
1.2 Calibration shall be performed with Newtonian reference materials using experimental conditions such as temperature, viscosity range, and shear rate (rotational speed), as close as practical to those to be used for measurement of test specimens.  
1.3 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions that are provided for information only and are not considered standard.  
1.3.1 Common viscosity units of Poise (P) are related to the SI units by the equivalency 1 cP = 1 mPa·s.  
1.4 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.  
1.5 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.

General Information

• Status: Published
• Publication Date: 31-Dec-2022
• ICS: 17.060 - Measurement of volume, mass, density, viscosity
• Technical Committee: E37 - Thermal Measurements
• Drafting Committee: E37.08 - Rheology

Standards Content (Sample)

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.
Designation:E2975 −23
Standard Test Method for
Calibration or Calibration Verification of Concentric Cylinder
1
Rotational Viscometers
This standard is issued under the fixed designation E2975; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Rotational viscometers have been commonly used for viscosity measurements since the first decade
of the twentieth century. After more than one hundred years, there have been many ease-of-use,
instrumentation, and data analysis improvements in these instruments. The initial constant torque
apparatus gave way to the more popular constant speed apparatus. Spindles became available supplied
with calibration constants. Computerization led to factory calibration and automatic viscosity
calculation. Even with these improvements, however, apparatus of the very earliest design is still
commonly used throughout the world.This standard seeks to provide users with the ability to calibrate
or verify calibration of rotational viscosity apparatus in their own laboratory.
1. Scope* 1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method describes the calibration or calibration
responsibility of the user of this standard to establish appro-
verification of rotational viscometers in which the rotational
priate safety, health, and environmental practices and deter-
element is immersed in a Newtonian reference material under
mine the applicability of regulatory limitations prior to use.
ambient temperature conditions. The method is applicable to
1.5 This international standard was developed in accor-
rotational-type viscometers where a constant rotational speed
dance with internationally recognized principles on standard-
results in a measured torque generated by the test specimen,
ization established in the Decision on Principles for the
and to Stormer viscometers where a constant applied torque
Development of International Standards, Guides and Recom-
results in a measured rotational speed. It is not intended for
mendations issued by the World Trade Organization Technical
cone-and-plate or parallel plate viscometers.
Barriers to Trade (TBT) Committee.
1.2 Calibration shall be performed with Newtonian refer-
2. Referenced Documents
ence materials using experimental conditions such as
2
temperature, viscosity range, and shear rate (rotational speed),
2.1 ASTM Standards:
as close as practical to those to be used for measurement of test
E473 Terminology Relating to Thermal Analysis and Rhe-
specimens.
ology
E1142 Terminology Relating to Thermophysical Properties
1.3 Units—The values stated in SI units are to be regarded
E1970 PracticeforStatisticalTreatmentofThermoanalytical
as standard. The values given in parentheses are mathematical
Data
conversions that are provided for information only and are not
considered standard.
3. Terminology
1.3.1 Common viscosity units of Poise (P) are related to the
3.1 Definitions—Specific technical terms used in this test
SI units by the equivalency 1 cP = 1 mPa·s.
method are described in Terminologies E473 and E1142
including Newtonian, non-Newtonian, stress, strain,
viscometer, viscometry, and viscosity.
1
This test method is under the jurisdiction ofASTM Committee E37 on Thermal
Measurements and is the direct responsibility of Subcommittee E37.08 on Rheol-
2
ogy. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Jan. 1, 2023. Published January 2023. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
ε1
approved in 2014. Last previous edition approved in 2016 as E2975 – 16 . DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E2975-23. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E2975−23
3.2 Definitions of Terms Specific to This Standard: 6. Apparatus
3.2.1 viscometer, Stormer, n—a rotational viscometer where
6.1 Viscometer, Concentric Cylinder Rotational—The es-
a constant torque is applied to a spindle and a resultant
sential instrumentation required providing the minimum rota-
rotational speed is measured.
tional viscometer analytical capabilities for this test method
incl
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: E2975 − 16 E2975 − 23
Standard Test Method for
Calibration or Calibration Verification of Concentric Cylinder
1
Rotational Viscometers
This standard is issued under the fixed designation E2975; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—Research report information was editorially added to 15.4 in May 2017.
INTRODUCTION
Rotational viscometers have been commonly used for viscosity measurements since the first decade
of the twentieth century. After more than one hundred years, there have been many ease-of-use,
instrumentation, and data analysis improvements in these instruments. The initial constant torque
apparatus gave way to the more popular constant speed apparatus. Spindles became available supplied
with calibration constants. Computerization led to factory calibration and automatic viscosity
calculation. Even with these improvements, however, apparatus of the very earliest design is still
commonly used throughout the world. This standard seeks to provide users with the ability to calibrate
or verify calibration of rotational viscosity apparatus in their own laboratory.
1. Scope*
1.1 This test method describes the calibration or calibration verification of rotational viscometers in which the rotational element
is immersed in a Newtonian reference material under ambient temperature conditions. The method is applicable to rotational-type
viscometers where a constant rotational speed results in a measured torque generated by the test specimen, and to Stormer
viscometers where a constant applied torque results in a measured rotational speed. It is not intended for cone-and-plate or parallel
plate viscometers.
1.2 Calibration shall be performed with Newtonian reference materials using experimental conditions such as temperature,
viscosity range, and shear rate (rotational speed), as close as practical to those to be used for measurement of test specimens.
1.3 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical
conversions that are provided for information only and are not considered standard.
1.3.1 Common viscosity units of Poise (P) are related to the SI units by the equivalency 1 cP = 1 mPa·s.
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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.
1
This test method is under the jurisdiction of ASTM Committee E37 on Thermal Measurements and is the direct responsibility of Subcommittee E37.08 on Rheology.
Current edition approved Dec. 1, 2016Jan. 1, 2023. Published January 2017January 2023. Originally approved in 2014. Last previous edition approved in 20152016 as
ε1
E2975 – 15.16 . DOI: 10.1520/E2975-16E01.10.1520/E2975-23.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E2975 − 23
2. Referenced Documents
2
2.1 ASTM Standards:
E473 Terminology Relating to Thermal Analysis and Rheology
E1142 Terminology Relating to Thermophysical Properties
E1970 Practice for Statistical Treatment of Thermoanalytical Data
3. Terminology
3.1 Definitions—Specific technical terms used in this test method are described in Terminologies E473 and E1142 including
Newtonian, non-Newtonian, stress, strain, viscometer, viscometry, and viscosity.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
2

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E2975 − 23
3.2 Definitions of Terms Specific to This Standar
...