DTC 300 is an instrument for using guarded heat flow meter for measuring the thermal conductivity over a wide range of temperatures. Operating on thermal conductivity range from 0.1 to 40 W/mK on the temperature range from -20 °C to 300 °C. Different setups applies for measurements of thin films, liquids, pastes, powders or solid materials. Device allows measurements according to ASTM E1530 standard.