Frico Free-Swelling (FSI) Electric Furnace Family

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. The FSI Electric Furnace Family is supplied complete with furnace and lid, tripod, crucible holder assembly, temperature control unit with automatic timer and alarm, crucibles and cover. Furnaces are available for operation on 115 or 220 volts, 60 Hz or 50 Hz.

CAT. NO.	DESCRIPTION
410000A1	FSI Furnace, 115 V, 60 Hz
410000A2	FSI Furnace, 115 V, 50 Hz
410000A3	FSI Furnace, 230 V, 60 Hz
410000A4	FSI Furnace, 230 V, 50 Hz
410001A1	Furnace Controller, 115V, 60Hz
410038B	Tripod
410039A	Crucible Holder Assembly
90-5605-36	Crucible
90-5607-36	Crucible Cover with Ring
90-5609-01	Crucible Cover/with Hole

Preiser Scientific, Inc., 94 Oliver Street, Saint Albans, WV 25177. Tel: 304-727-2902; Fax: 304-727-2932.