I.Summary
The instrument is designed and made as per the National Standard of People’s Republic of China GB/T********4 “Test Methods for Boiling Range of Volatile Organic Liquids for Industrial Use”. It is suitable to determine boiling range of volatile organic liquids for industrial use and organic solvents for material. If you prepare proper flasks, it can also be used to determine distillation characteristics of gasoline, aviation gasoline, jet fuels, solvents having special boiling point, naphtha, diesel oils, distillate fuels, and similar petroleum products.
II.Main technical specifications and parameters 
1. Main technical specifications
(1) The electric furnace is mainly composed of SiC furnace base, ***0W, **0V electric heating wire, and SiC board, which can withstand high temperature. The height of the electric furnace can be adjusted using the height adjustment knob on the electric furnace case. Its heating power can be controlled by voltage adjustment knob on the control panel.
(2) The electric furnace moving boards are made of SiC boards. The diameters of hole on them are φ*8 mm, and φ*0 mm respectively.
(3) The water bath is composed of overflow tube, temperature adjustment tube, and water bath. The bath size is **4 mm×**7 mm×**6 mm
(4) The electric furnace case is made of cold rolled steel sheet. There is an observation window in the front of upper section. The electric furnace and distillation flask are installed on it. The electric circuit controlling part is installed on the lower section of the case.
(5) The distillation flask is made of harden glass. The outer diameter of ball type section of the flask is φ*5 mm. The inner diameter of the flask neck is φ*6.9 mm. The angle between the branch tube and flask neck is *5±3 °.
(6) The condensation tube is made of copper tube of φ*4. Its outlet likes arc. It is about **0 mm when it is straighten.
(7) The graduated flask is **0 ml; its scale division is 1 ml
(8) The thermometer is glass mercury type
2. Main technical parameters                                                                                                        　                               (1) Power supply: AC **0V±*0%, *0 Hz
(2) Heating power of electric furnace: ***0 W
(3) Ambient temperature: room temperature～*5 ℃
(4) Relative humidity: ≤*5%