lab mini vacuum rotary evaporator price
As a commonly used evaporator product in laboratory and production, rotary evaporation instrument has been recognized by the majority of users for its excellent distillation and extraction performance. Today, the editor will explain to you the working principle, structural characteristics and advantages and disadvantages of the rotary evaporator. Hope this article can help users to better apply our products.
What is the working principle of lab mini vacuum rotary evaporator?
The working principle of the rotovap for sale is simply to make the distillation flask rotate at a constant speed at the most suitable speed through electronic control to increase the evaporation area. At the same time, the evaporating flask is under negative pressure by the vacuum pump. The evaporating flask is placed in a water bath for constant temperature heating while rotating, and the solution in the flask is heated, diffused and evaporated in the rotating flask under negative pressure. The evaporation system can be sealed and decompressed to 400 to 600 mm Hg; the solvent in the distillation flask is heated with a heating bath to a temperature close to the boiling point of the solvent; it can also be rotated at a speed of 50 to 160 rpm to form a film of the solvent Increase the evaporation area. In addition, under the action of a high-efficiency cooler, the hot vapor can be quickly liquefied to speed up the evaporation rate. The above is an introduction to the working principle of the rotary evaporator.
What is the structure of lab mini vacuum rotary evaporator?
After introducing the working principle of the rotary evaporator, let's take a look at its structure. It is mainly composed of six parts, namely the condenser tube, the collection bottle, the evaporation tube, the rotary motor, the vacuum system and the bath. The condensing tube uses double serpentine condensation, and condensing agents such as dry ice and acetone are added to condense the sample; the collection bottle effectively recovers the condensed sample, and the sample is collected through the collection bottle after cooling; the evaporation tube first plays the role of the sample rotation support shaft, and secondly The sample is sucked out through the evaporating tube vacuum system; the rotary motor drives the evaporating flask containing the sample through the rotation of the motor; the vacuum system is used to reduce the air pressure of the rotary evaporator system; finally, the bath is used to heat the sample with water or oil as a medium.
Advantages of lab mini vacuum rotary evaporator:
At relatively low temperatures, rotary evaporation can separate solutes and solvents. Rotary evaporation is mainly used to collect solutes, and the collection of solutions is mainly the same as recycling and reducing pollution. In addition, rotary evaporation is heated by using a water bath or an oil pan. In the case of liquids that do not boil easily, rotary evaporation can further manipulate them while they are still boiling. Conversely, in the case of easily boiling liquids, rotary evaporation can control its temperature and pressure near or below its boiling point to ensure that it evaporates. In general, rotary evaporation can greatly reduce the time of experiments compared to water vapor evaporation. Typically, rotary evaporation is completed in as little as a few minutes, with a maximum time of no more than half an hour. Conversely, it takes about an hour for the water vapor to evaporate to complete.
Disadvantages of lab mini vacuum rotary evaporator:
However, if the sample is complex, such as food or environmental samples, bubbles will appear during the rotary evaporation process, and a large amount of impurities will remain. Rotary evaporation is a separation process that utilizes differences in the boiling points of solutes, and it separates all components after condensation. In addition, the degree of vacuum is also an important factor affecting the effect of rotary evaporation. Rotary evaporation can take advantage of the difference in boiling points of solids and liquids for separation, but this process will result in impurity of the separated solutes.
The above is the details of lab mini vacuum rotary evaporator. If you have needs, you can contact Zhengzhou Keda Machinery Equipment Co., Ltd. For decades, Zhengzhou Keda Machinery Equipment Co., Ltd. has been committed to the production and manufacture of laboratory instruments and pipe fittings.
If you want to know about our products, or want to buy our instruments, please feel free to contact us, we will be happy to help you.
