Nowadays, the rotary evaporator are widely used in factories and laboratories, It is mainly used for concentration, crystallization, drying, separation and solvent recovery in the pharmaceutical, chemical and biopharmaceutical industries. However, there are many problems during the distillation process. For example: lower distillation effect, distillation collision and so on. However, how should we solve these tough problems? For solving these problems, The most fundamental way is to spend more time on the purchase of the rotary evaporator. Today, we will share with you the four tips for buying a rotary evaporator.
Before buying a rotary evaporator, you need to consider four issues.
First, what is the amount of distillation of the rotary evaporator?
Second, what is the expected distillation solvent?
Third, what is the boiling point of the solvent?
Fourth, what is the number of samples that need to be distilled?
Once you have determined the experimental requirements for distillation and the type of solvent, you can start buying a rotary evaporator. However, in the process of purchasing, we also have to pay attention to four issues.
First, confirm a clear specification rotary evaporator. The specifications of the rotary evaporator are based on the volume of the evaporation flask. The size of the evaporation flask depends on the amount of material. In general, 2L, 3L, 5L rotary evaporators are suitable for small laboratory tests; 5L, 10L, 20L are suitable for medium-sized tests; and 5L, 10L, 20L are suitable for medium-sized tests and production.
Second, make it clear that the distillation quantity of rotary evaporator need to complete. Distillation efficiency is important, and it determines the number of samples that need to be distilled in a day. In the same situation, the higher the distillation efficiency, the more samples can be distilled. Here, we wants to explain again some factors that affect the distillation efficiency, such as the degree of vacuum of the system, the temperature of the heating pot, and the temperature of the cooling medium.
Third, an assessment of the security risks is needed.The main risks of distillation are mainly from the distillation solvent and the heating medium.If the heating medium is silicone oil, the ignition temperature is 25℃higher than the heating plate temperature. For flammable, explosive Distillation solvents, explosion-proof glass components are preferred. After the distillation is complete, it is correct to choose automatic deflation so as to avoid manual deflation that may cause an explosion. If you need to optimize the laboratory, the auxiliary condensing unit can maximize the recovery of the distillation solvent, which is also an excellent choice.
Fourth, after sales service. After-sales service is an important reference standard when purchasing a rotary evaporator, so there is no need to say more here. With the development of technology, Chinese-made products are highly competitive in the market and have received wide attention. At the same time, Chinese-made products are competitively priced and quality assured.