ASTM D5225-22
Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer

Standard No.

ASTM D5225-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D5225-22

Scope

1.1 This test method covers the determination of the solution viscosity of polymers using a differential or the modified differential viscometer. It is applicable to all polymers that dissolve completely without chemical reaction or degradation to form solutions that are stable with time and temperature. Results of the test are usually expressed as specific viscosity, intrinsic viscosity (limiting viscosity number), inherent viscosity (logarithmic viscosity number), or relative viscosity (viscosity ratio). 1.2 Since there is more than one type of viscometer available to measure a differential pressure, follow the manufacturer’s directions applicable to the equipment being used. 1.3 The solution viscosity values are comparable with those obtained using a glass capillary of Test Method D2857. This test method differs from the glass capillary in that the solvent and the solution are compared at the same time that a test is run. With a glass capillary, each solution must be referenced back to the solvent run in the same capillary at the same temperature. 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 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. For specific hazard statements, see Section 8. NOTE 1—There is no known ISO equivalent to this standard. 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.

ASTM D5225-22 Referenced Document

• ASTM D1243 Standard Test Method for Dilute Solution Viscosity of Vinyl Chloride Polymers
• ASTM D1600 Standard Terminology for Abbreviated Terms Relating to Plastics
• ASTM D2857 Standard Practice for Dilute Solution Viscosity of Polymers
• ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
• ASTM E2935 Standard Practice for Evaluating Equivalence of Two Testing Processes
• ASTM E456 Standard Terminology for Relating to Quality and Statistics
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM D5225-22 history

• 2022 ASTM D5225-22 Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer
• 2017 ASTM D5225-17 Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer
• 2014 ASTM D5225-14 Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer
• 2009 ASTM D5225-09 Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer
• 1998 ASTM D5225-98(2003) Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer
• 1998 ASTM D5225-98 Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer