Electrically heated, comprising of one single mild steel tubular stand provided with two shelves one above the other. A specially designed glass fume duct with (B 24) Cone openings (suitable for flasks having 24/29 socket) having such provision so that no leakage of fumes takes place. One heater box having individual energy regulators for 500 was heaters are supplied in digeson part at lower side. One heater box of above design is supplied in disllaon part at the upper side. Disllaon part is also provided with brass condenser rack with water circulaon system and clamps. The whole unit is operated on 220 volts AC mains.