These are sturdy double walled units with outer chamber made of Mild Steel sheet duly powder coated / Painted inner made up of anodized aluminum or Stainless Steel sheet. The gap between inner and outer chamber is filled with high grade glass wool to avoid thermal losses. Beaded heating elements are placed in ribs, at bottom and sides. Inner chamber is provided with ribs for adjusting perforated selves to convenient height. The door is fitted with glass viewing window to facilitate inspection of sample without disturbing the test temperature. Temperature is controlled by Microprocessor PID Controller and its range from ambient to 90°C ± 0.5°C. An L- shaped prismatic thermometer is fitted to unit for reading the chamber temperature. Air ventilators are also provided on the sides of unit. To work on 220/230 volts A.C. Supply.