Introduction and use of laboratory oil-free vacuum pump buffer cups and filter elements

The laboratory oil-free vacuum pump is mainly used in the laboratory for filtration, liquid absorption, vacuum drying oven, rotary evaporator and other purposes. These experiments may cause liquid pumping of the pump and the inhalation of dust particles into the pump to damage internal components. R series oil-free vacuum pumps are based on conventional products, and a buffer cup and filter kit set is added to the intake end to solve these problems. The kit consists mainly of a buffer cup and a filter element 2, which is used to collect the sucked liquid and the filter element is used to block the inhalation of dust particles into the body. The specific use is as follows:
When the liquid is sucked into the buffer cup, the user should stop the operation and turn off the vacuum pump. The body of the buffer cup and pump is threaded similar to the mouth of a typical beverage bottle. The cup can be removed by gently rotating and the inhaled liquid can be poured out. The cup can be cleaned with detergent and water. After cleaning the buffer cup, use a paper towel or a dry part to dry it thoroughly. The white filter element can be unscrewed, also threaded, or simply cleaned in the same way, with a paper towel to absorb the surface moisture, which is then thoroughly dried with a blower. Then, the filter element and the buffer cup can be screwed back to the original position. When screwing back, pay attention to the thread position and slowly tighten it to prevent the thread from slipping.
If inhaling dust particles, clean the filter element and the buffer cup and dry the filter bowl and filter element as described above. However, if it is a particularly fine particle, the filter element will completely fail after the adsorption reaches the limit. At this time, the filter element needs to be replaced, otherwise the vacuum degree and pumping speed of the instrument will decrease.
There are two points to note when using the buffer cup and filter element: 1) Do not use cleaning agents to clean them. It may cause corrosion cracking. Use only normal detergent and water. 2) The moisture must be thoroughly dried before reinstalling the accessories, otherwise the residual moisture will still be sucked into the vacuum pump and damage the instrument.
R series vacuum pumps with buffer cups are especially suitable for the following applications : 1) Vacuum suction filtration and vacuum aspiration: The R300 oil-free suction pump is recommended. The front buffer cup can prevent the liquid from sucking into the pump. 2) Vacuum adsorption: R410 oil-free vacuum pump with strong vacuum suction can be selected. While ensuring the adsorption effect, the front filter element can 100% avoid the inhalation of dust and particles. 3) Vacuum drying oven: R610 can be used, which can reach a very high vacuum in a short time and prevent the moisture in the gas from being sucked into the instrument. More uses can be negotiated with the application engineer.

Vandetanib Intermediate

Name: Vandetanib

Chemical name: 4-(4-Bromo-2-fluoroanilino)-6-methoxy-7-[(1-methylpiperidin-4-yl)methoxy]quinazoline

CAS number: 443913-73-3

Packing: 1kg aluminum foil bag

Usage: Vandetanib is an oral small molecule multi-target butyrate kinase inhibitor, which has a good therapeutic effect on non-small cell lung cancer.

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