1.1This test method covers the measurement of the free acidity present in certain alkali-soluble resins.
1.2This test method is not suitable for styrene-maleic anhydride resins.
1.3The resin manufacturer should specify whether or not this test method may be used for his product(s).
1.4The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5This 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.
1.6This 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 D3643-15(2022) History
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