FOX50 is a microprocessor-based instrument for testing in accordance with ASTM C 518 and ISO 8301. It is designed for testing the thermal conductivity of materials in the conductivity range of 0.1W/mK to 10W/mK. The instrument is designed to test polymers, composite materials, low conductivity ceramics, glasses, etc. The instrument tests up to 64 mm diameter specimens from 0 to 25 mm thick (2.5 inch diameter 0- to 1-inch thick). The actual metering area is 25 mm (1 inch) square. Both instrument plates utilize solid state heating/cooling and can operate between 0 and 110 degrees C (32 and 230 degrees F). Alternatively, up to nine temperatures can be entered for each specimen in which case the instrument will automatically advance to the next temperature once equilibrium conditions have been established. Results are displayed at the end of each test.