The laboratory vacuum pump is a product that is designed in accordance with the specific needs of the equipment and equipment used in the laboratory. There are a large number of experiments or equipment that need to be used in the laboratory with vacuum pumps, such as vacuum filtration, waste suction, vacuum drying ovens, freeze dryers or centrifugal concentrators. As a specific user, users often cannot accurately select products according to their own needs and equipment. Users often have the following misunderstandings when choosing a laboratory vacuum pump:
1. The higher the power, the better. In the daily sales, customers who often encounter many consultations only require the vacuum pump power of the laboratory to be as high as possible. The parameters that affect the actual effect of the general vacuum pump in the specific use are the vacuum degree and the pumping speed of the product. For example, when decompressing, the effect of distillation depends on the degree of vacuum. At this time, you should pay attention to the product that meets the vacuum requirements required for the distillation of your own sample. Of course, you can also choose the vacuum as high as possible (for example, T242 laboratory high). Vacuum pump model; for vacuum pumping and vacuum drying, the vacuum pump should be selected according to the pumping tank or the internal volume of the drying box. The value of power will indirectly affect the degree of vacuum and pumping speed. However, the structure, principle, internal design and other factors of the vacuum pump will affect the vacuum degree and pumping speed. For example, the power of the oil pump and the pump are generally higher. Oil-free vacuum pumps, but different types of oil-free vacuum pumps will exceed the above two pumps in terms of vacuum and pumping speed. Therefore, the actual effect of the vacuum pump cannot be determined simply by power.
Oil-free vacuum pump plug-in is available, no maintenance is required, but oil pumps are recommended for areas requiring high vacuum and pumping speeds.
2. Because of maintenance-free and maintenance, only buy oil-free vacuum pumps. At present, laboratory vacuum pumps commonly used in the market are classified according to their basic principles, such as oil-free vacuum pumps, oil pumps, and water circulation pumps. Compared with other products, the oil-free vacuum pump has the obvious advantage that it can be used after plugging in. It does not need to add pump oil or connect water source, and it is convenient to use and does not pollute the environment. However, due to the limitation of its principle structure, the oil-free vacuum pump cannot reach the highest vacuum pump and pumping speed that the oil pump can achieve. Therefore, for some applications and equipment with high vacuum or pumping speed requirements, oil pumps should be used. For example, some vacuum drying ovens with high volume require a high pumping speed vacuum pump. It is recommended to use (T130 laboratory oil pump).
More questions about the selection of vacuum pumps in the laboratory can be found on the official website of Shanghai Lingde Instrument Co., Ltd.
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