KEWIL Ring and Ball Apparatus Ring and ball apparatus is meant for determining soft point of bitumen. Using various scientific principles it is also used in petroleum industry, construction projects, paint industry etc. The ring & ball apparatus is used to determine the temperature at which a sample of bituminous material loaded by a steel ball of 9.5 mm diameter, drops a specified distance when heated under specified conditions. It is used to determine softening point of bitumen.
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