What data do we need to know when purchasing rotary evaporator? We think many friends who have already bought this do not know much about it. Some friends buy rotary evaporators with low efficiency, liquid leakage at the connection port of vacuum pump, slow heating, etc. This is because we did not pay attention to the problems when buying rotary evaporators. Today, let's share some precautions about the purchase of rotary evaporators, hoping to be helpful to you.
First of all, we need to know our specific use needs, such as the quantity of materials evaporated at one time? What is the boiling point range of the solvent used? Is the solvent flammable or explosive? Are toxic and harmful solvents used? What is the amount of distillation and working hours per day? And so on. Once we know our needs clearly, we can choose and buy products targeted.
In terms of the specifications of the rotary evaporator, the size of the evaporation bottle we need depends on the number of evaporation samples we need every day. Generally, 2L, 3L and 5L rotary evaporators are more suitable for small-scale experiments, 5L, 10L and 20L rotary evaporators are suitable for medium-sized experiments, and 20L, 50L and above are suitable for production. In addition to capacity, distillation efficiency is also our key concern. The higher the efficiency, the greater the number of samples distilled every day. Therefore, we should make more efforts in the working efficiency of the equipment when purchasing the rotary evaporator.
Finally, in terms of safety, the safety risk of rotary evaporator mainly lies in the two aspects of distilled solvent and heating medium. The temperature of heating pot should be at least 25 ℃ higher than our use temperature. When we choose the solvent, if the solvent is flammable and explosive, we need to choose the explosion-proof jacketed glass reactor.
