ASTM E28-18
- Standard Test Methods for Softening Point of Resins Derived from Pine Chemicals and Hydrocarbons, by Ring-and-Ball Apparatus
- standard by ASTM International, 07/01/2018
- Category: ASTM
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1.1 These test methods are intended for determining the softening point of resins (including rosin and terpene resins) and similar materials by means of the ring-and-ball apparatus.
Note 1: For testing asphalts, tars, and pitches, see Test Method D36.

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