As the best-selling analytical instrument, the distillation tester often has a small partner to consult, what is the distillation range? Why should gasoline and diesel oil test the distillation range? Today is the day to give the guys a little bit.

Under standard pressure, heat a pot of water to boiling, measured by a thermometer, the water temperature is 100℃. We continue to boil, and when the water evaporates, the temperature is still 100 degrees Celsius, because water is pure and has a fixed boiling point. Similarly heating a pot of oil, the result is different, it begins to boil at the same temperature, as the heating process of the oil vapor volatilization, the remaining oil in the pot will become higher and higher boiling point. This is because oil is a mixture, its boiling point is not a certain temperature point, but a temperature range, this temperature range is called the distillation range.

What is the distillation range of oil products?

So the question is, how do we measure the temperature range of the boiling point of the oil? Look at the picture below:

Is not very familiar ah, junior high school chemical distillation test simple device, also suitable for oil testing yo! For specific operation methods, please log in to “Baidu” search: GB/T6536 “Distillation determination Method of Petroleum products”. The first two pictures you can see more intuitively.

What is the distillation range of oil products?