JMT - 101
RING AND BALL APPARATUS IS: 1205 - 1985, IP : 58/63
The apparatus is used to determine softening point of bitumen. Ring and ball apparatus is used to determine softening point. It is that temperature at which a sample of bituminous material loaded by a 9.5mm dia-steel ball, drops at the distance of 25mm.
The apparatus consists of steel braket with a sliding plate support. That supports has two holes of 10mm dia on which a Ring and Ball guide can be kept. A central hole on this plate is for inserting thermometer. Supplied with a glass beaker approximate 8.5c.m. I.D., 12 cm high and a hand stirrer and nos. 9.5mm dia steel balls.