> Products > Research and laboratory  Split tube furnaces Split Tube Furnaces 1-zone and 3-zone design T max 1100 °C Tube diameter up to 300 mm Heated length up to 500 mm and individually expandable Split design allows to insert tubes with large flanges Due to flexible insulation plugs on both ends, the furnace can be easily adapted to different tube diameters Heating elements embedded in high grade vacuum-formed fibre insulation, for excellent temperature uniformity Powerful heating and fast heating cycles Accelerate cooling of furnace and tube by opening hinged casing Heating elements controlled by solid state relays for very precise temperature control, wear-free and noiseless Switchgear and control unit integrated in the furnace housing underneath the tube module for comfortable operation of the controller Accessories: 3-zone design for high temperature uniformity With solid base frame also suitable for vertical operation Adjustable temperature limiter to protect furnace and charge acc. EN 60519-2 Further accessories see tube furnace accessories