ASTM D562-10(2014)

Standard Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer

SIGNIFICANCE AND USE
5.1 This test method provides values that are useful in specifying and controlling the consistency of paints, such as consumer or trade sales products.
SCOPE
1.1 This test method covers the measurement of Krebs Unit (KU) viscosity to evaluate the consistency of paints and related coatings using the Stormer-type viscometer.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2014
• ICS: 87.040 - Paints and varnishes
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.24 - Physical Properties of Liquid Paints & Paint Materials

Relations

• Replaces: ASTM D562-10 - Standard Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer
• Effective Date: 01-Dec-2014
• Referred By: ASTM D6511/D6511M-18 - Standard Test Methods for Solvent Bearing Bituminous Compounds
• Effective Date: 01-Dec-2014
• Referred By: ASTM D7377-09(2018) - Standard Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints using a Water Faucet
• Effective Date: 01-Dec-2014
• Referred By: ASTM D7394-18(2023) - Standard Practice for Rheological Characterization of Architectural Coatings using Three Rotational Bench Viscometers
• Effective Date: 01-Dec-2014
• Referred By: ASTM D2205-20 - Standard Guide for Selection of Tests for Traffic Paints
• Effective Date: 01-Dec-2014
• Referred By: ASTM F940-99(2019)e1 - Standard Practice for Quality Control Receipt Inspection Procedures for Protective Coatings (Paint), Used in Marine Construction and Shipbuilding
• Effective Date: 01-Dec-2014
• Referred By: ASTM D8008-20 - Standard Practice for Representative Field Sampling of Traffic Paints
• Effective Date: 01-Dec-2014
• Referred By: ASTM D3730-17(2022) - Standard Guide for Testing High-Performance Interior Architectural Wall Coatings
• Effective Date: 01-Dec-2014
• Referred By: ASTM D7538-09(2018) - Standard Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints Using an Atomizing Spray Device
• Effective Date: 01-Dec-2014
• Referred By: ASTM D6763-16(2022) - Standard Guide for Testing Exterior Wood Stains and Clear Water Repellents
• Effective Date: 01-Dec-2014
• Referred By: ASTM D2243-20 - Standard Test Method for Freeze-Thaw Resistance of Water-Borne Coatings
• Effective Date: 01-Dec-2014
• Referred By: ASTM C647-19 - Standard Guide to Properties and Tests of Mastics and Coating Finishes for Thermal Insulation
• Effective Date: 01-Dec-2014
• Referred By: ASTM D3450-15(2020) - Standard Test Method for Washability Properties of Interior Architectural Coatings
• Effective Date: 01-Dec-2014
• Referred By: ASTM D5146-10(2019) - Standard Guide to Testing Solvent-Borne Architectural Coatings
• Effective Date: 01-Dec-2014
• Referred By: ASTM D211-67(2023) - Standard Specification for Chrome Yellow and Chrome Orange Pigments
• Effective Date: 01-Dec-2014

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D562 − 10 (Reapproved 2014)
Standard Test Method for
Consistency of Paints Measuring Krebs Unit (KU) Viscosity
1
Using a Stormer-Type Viscometer
This standard is issued under the fixed designation D562; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 5. Significance and Use
1.1 This test method covers the measurement of Krebs Unit 5.1 This test method provides values that are useful in
(KU) viscosity to evaluate the consistency of paints and related specifying and controlling the consistency of paints, such as
coatings using the Stormer-type viscometer. consumer or trade sales products.
1.2 The values stated in SI units are to be regarded as the
METHOD A
standard. The values given in parentheses are for information
only. 6. Apparatus
1.3 This standard does not purport to address all of the
6.1 Viscometer, Stormer, with the paddle-type rotor as illus-
safety concerns, if any, associated with its use. It is the
trated in Fig. 1 and Fig. 2. The stroboscopic timer attachment
responsibility of the user of this standard to establish appro-
inFig.1canberemovedandtheinstrumentusedwithoutitbut
priate safety and health practices and determine the applica-
with a sacrifice of speed and accuracy. The stroboscopic timer
bility of regulatory limitations prior to use.
gives the 200 r/min reading directly.
3
6.2 Container, 500-mL (1-pt), 85 mm (3 ⁄8 in.) in diameter.
2. Referenced Documents
2
6.3 Thermometer—An ASTM Stormer Viscosity thermom-
2.1 ASTM Standards:
eter having a range from 20 to 70°C and conforming to the
E1 Specification for ASTM Liquid-in-Glass Thermometers
requirements for Thermometer 49C, as prescribed in Specifi-
3. Terminology
cation E1. In addition, temperature measuring devices such as
non-mercury liquid-in-glass thermometers, thermocouples, or
3.1 Definitions of Terms Specific to This Standard:
platinum resistance thermometers that provide equivalent or
3.1.1 consistency, n—load in grams to produce a rotational
better accuracy and precision, that cover the temperature range
frequency of 200 r/min (Stormer Viscometer).
for thermometer 49C, may be used.
3.1.2 Krebs units (KU), n—valuesofascalecommonlyused
6.4 Stopwatch, or suitable timer measuring to 0.2 s.
to express the consistency of paints generally applied by brush
or roller.
6.5 Weights, a set covering the range from 5 to 1000 g.
3.1.2.1 Discussion—This scale is a function of the “load to
7. Materials
produce 200-r/min” scale.
7.1 Two standard oils, calibrated in absolute viscosity
4. Summary of Test Method
(poise), that are within the viscosity range of the coatings to be
4.1 The load required to produce a rotational frequency of
measured. These oils should differ in viscosity by at least 5 P.
200 r/min for an offset paddle rotor immersed in a paint is
NOTE 1—The normal range of the Stormer is covered by oils having
determined.
viscosities of 4 P (70 KU), 10 P (85 KU), and 14 P (95 KU).
7.1.1 Suitable standards are silicone, hydrocarbon, linseed,
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and castor oils. Silicone and hydrocarbon oils calibrated in
and Related Coatings, Materials, andApplications and is the direct responsibility of
poises are commercially available. Uncalibrated linseed and
Subcommittee D01.24 on Physical Properties of Liquid Paints and Paint Materials.
Current edition approved Dec. 1, 2014. Published December 2014. Originally
castor oils may be calibrated with any apparatus that provides
approved in 1947. Last previous edition approved in 2010 as D562 – 10. DOI:
measurements of absolute viscosity.
10.1520/D0562-10R14.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D562 − 10 (2014)
L 5 610O1906.6 D /30
~ !
where:
O = viscosity of oil in poises and
D = density of oil.
4
8. Calibration
8.1 Remove the rotor and weight carrier from the viscom-
eter. Make sure the string is wound evenly on the drum and
does not overlap itself.
8.2 Attach a 5-g weight onto the string and then release the
brake. If the viscometer starts to run from this dead start and
continuestorunthroughseveralrevolutionsofthestringdrum,
it is satisfactory
...

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.
Designation: D562 − 10 D562 − 10 (Reapproved 2014)
Standard Test Method for
Consistency of Paints Measuring Krebs Unit (KU) Viscosity
1
Using a Stormer-Type Viscometer
This standard is issued under the fixed designation D562; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers the measurement of Krebs Unit (KU) viscosity to evaluate the consistency of paints and related
coatings using the Stormer-type viscometer.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E1 Specification for ASTM Liquid-in-Glass Thermometers
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 consistency, n—load in grams to produce a rotational frequency of 200 r/min (Stormer Viscometer).
3.1.2 Krebs units (KU), n—values of a scale commonly used to express the consistency of paints generally applied by brush or
roller.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.24 on Physical Properties of Liquid Paints &and Paint Materials.
Current edition approved July 1, 2010Dec. 1, 2014. Published July 2010December 2014. Originally approved in 1947. Last previous edition approved in 20052010 as
D562 – 01 (2005).D562 – 10. DOI: 10.1520/D0562-10.10.1520/D0562-10R14.
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’sstandard’s Document Summary page on the ASTM website.
3.1.2.1 Discussion—
This scale is a function of the “load to produce 200-r/min” scale.
4. Summary of Test Method
4.1 The load required to produce a rotational frequency of 200 r/min for an offset paddle rotor immersed in a paint is
determined.
5. Significance and Use
5.1 This test method provides values that are useful in specifying and controlling the consistency of paints, such as consumer
or trade sales products.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D562 − 10 (2014)
METHOD A
6. Apparatus
6.1 Viscometer, Stormer, with the paddle-type rotor as illustrated in Fig. 1 and Fig. 2. The stroboscopic timer attachment in Fig.
1 can be removed and the instrument used without it but with a sacrifice of speed and accuracy. The stroboscopic timer gives the
200 r/min reading directly.
3
6.2 Container, 500-mL (1-pt), 85 mm (3 ⁄8 in.) in diameter.
6.3 Thermometer—An ASTM Stormer Viscosity thermometer having a range from 20 to 70°C and conforming to the
requirements for Thermometer 49C, as prescribed in Specification E1. In addition, temperature measuring devices such as
non-mercury liquid-in-glass thermometers, thermocouples, or platinum resistance thermometers that provide equivalent or better
accuracy and precision, that cover the temperature range for thermometer 49C, may be used.
6.4 Stopwatch, or suitable timer measuring to 0.2 s.
6.5 Weights, a set covering the range from 5 to 1000 g.
7. Materials
7.1 Two standard oils, calibrated in absolute viscosity (poise), that are within the viscosity range of the coatings to be measured.
These oils should differ in viscosity by at least 5 P.
NOTE 1—The normal range of the Stormer is covered by oils having viscosities of 4 P (70 KU), 10 P (85 KU), and 14 P (95 KU).
7.1.1 Suitable standards are silicone, hydrocarbon, linseed, and castor oils. Silicone and hydrocarbon oils calibrated in poises
are commercially available. Uncalibrated linseed and castor oils may be calibrated with any apparatus that provides measurements
of absolute viscosity.
FIG. 1 Stormer Viscometer with Paddle-Type Rotor and Stroboscopic Timer
2

...