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Full Description

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.

 

Document History

  1. ASTM D5225-17

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    Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer

    • Most Recent
  2. ASTM D5225-14


    Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer

    • Historical Version
  3. ASTM D5225-09


    Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer

    • Historical Version
  4. ASTM D5225-98(2003)


    Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer

    • Historical Version
  5. ASTM D5225-98


    Standard Test Method for Measuring Solution Viscosity of Polymers with a Differential Viscometer

    • Historical Version