D36-06
Standard Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)

1.1 This test method covers the determination of the softening point of bitumen in the range from 30°C to 157°C (86°F to 315°F) using the ring-and-ball apparatus immersed in distilled water (30°C to 80°C), USP glycerin (above 80°C to 157°C), or ethylene glycol (30°C to 110°C).

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