Used for the determination of the Free Swelling Index of coal by the electric furnace method as designated by ASTM Standard D-720. The Free Swelling Index test is a rapid, small-scale, empirical method for measuring the free-swelling properties of coal. Results of the test may be used as an indication of the coal's coking characteristics, and have also been used as an index of the extent to which a coal has been oxidized or weathered.

Features

• Rapid, easy, small-scale, and empirical method for measuring the free-swelling properties of coal.

Supplied with

• Furnace and lid.
• Tripod and crucible holder assembly.
• Temperature control unit with automatic timer and alarm.
• Crucibles and cover.