Since there are so many different types of evaporators, they tend to have different features. They use different methods to accomplish the same goal of evaporating, including heat, nitrogen, and motion. Some of the units have some very simple to use and understand displays and controls. Others are a bit more complex, and they should only be operated by those who know how to use them properly.
Different types of evaporators work differently. The blow down evaporators will typically use nitrogen gas, which it blows into a container to remove the liquid. Centrifugal evaporators use centrifugal force to evaporate the liquid. One of the benefits of this type of evaporator is that it usually has a number of slots or spaces to evaporate a large number of samples at the same time. Some use heat to remove the liquid. It can evaporate the solvent and other liquids. They will then be able to prepare the samples for analysis. When you are looking at the different options available with these machines, you should be able to find one that will work well for your field.