The difference between laboratory oil-free vacuum pump and oil pump and the difference in use

Laboratory oil-free vacuum pumps and oil pumps are two different types of vacuum pumps commonly used in laboratories. These two pumps have many differences in internal structure, principle, and actual use effects. These differences are not good or bad. Each has its strengths and weaknesses, which is why they are suitable for matching different types of laboratory equipment.

The laboratory oil-free vacuum pump is a vacuum pump that can be used directly by connecting the power supply. It does not need to be connected to a water source or add vacuum pump oil. The significant advantage of this pump is that it is easy to operate for the first time and eliminates the need to change the pump oil in the future. Because it is dry running, there will be no oil mist or oil and water to the suction pump tube. Therefore, the use of oil-free vacuum pump is suitable for vacuum filtration (R300 suction vacuum pump, very small size), cell culture liquid waste extraction (BV240 waste liquid suction device, built-in oil-free vacuum pump, with foot switch and 3000ml sterilizable suction Liquid bottles), these applications do not require a high degree of vacuum, but the oil mist pollution will affect the experiment. For example, when suctioning, the suction will contaminate the filtered filtrate, and the supernatant of the culture medium is generally not used in the clean room or the oil pump or the water circulation vacuum pump. The oil-free vacuum pump with partial vacuum and high pumping speed can also be used with vacuum drying oven (recommended R610 oil-free vacuum pump, vacuum degree up to 40 mbar, recommended drying box below 50L) or small vacuum dryer.

Due to the use of a rotary vane structure, the laboratory oil pump can achieve a higher vacuum in a shorter time than an oil-free vacuum pump. For some areas with high vacuum requirements, such as vacuum distillation (can be used with T242 laboratory oil pump), vacuum drying oven (recommended oil-free vacuum pump for small capacity, T170 laboratory vacuum pump for large capacity 50L or more), rotary evaporator , freeze dryers, etc. The vacuum required for these devices is generally difficult to achieve with oil-free vacuum pumps.

In summary, when purchasing a laboratory vacuum pump, the user should first consider the vacuum degree, pumping speed, and environment in which the equipment is used, and then select. If you simply consider the use of a convenient choice of oil-free vacuum pump or the pursuit of high vacuum using the oil pump, it may cause an option error.

For detailed product information, please visit the website of Shanghai Lingde Instrument Co., Ltd.