SPE solid phase extraction device (SPE solid phase extraction device) is a kind of widely used and popular sample pretreatment equipment. It uses solid adsorbent to selectively adsorb the target compounds in the sample, separate them from the sample matrix and interfering substances, and then elu...

Vacuum plus die casting machine is a new type of casting machine. It is controlled by microcomputer and can be used to cast various dental alloys actively or manually. According to the principle of melting gold and casting, it can be divided into direct current arc heating (centrifugal) casting a...

Vacuum pump for asbestos free gasket It adopts 100% asbestos free material, which is completely free of asbestos, and has passed many certification including RoHS, which can meet the environmental requirements of various countries and abroad. According to the requirements, both sides can be treat...

The oil mist filter of vacuum pump can filter harmful substances in vacuum pump and has good protection effect. Generally, the filter needs three times of filtration. So what exactly does it filter each time? Let’s learn about the three times filtration of vacuum pump filter. First filtrati...

When an electron passes through a rarefied gas in a vacuum vessel, it collides with the gas molecules. When the electron energy is small, the collision only changes the velocity and direction of the two. When the energy of the electron is higher than the ionization potential of the gas, the high-...

As we all know, each liquid ring vacuum pump has an intake valve, so what is its function? Many people will understand that if you open the intake valve, the vacuum of the liquid ring vacuum pump will not be reduced? This is true. However, the function of the intake valve is to eliminate the abn...

Requirements of vacuum degree in vacuum system for electronic energy spectrometer The requirement of vacuum degree in vacuum pump of electron energy spectrometer is that of all large analytical instruments, which is generally better than 10-7pa. On the one hand, it is because the photoelectron en...

Vacuum valve refers to the vacuum system components used to change the direction of air flow, adjust the size of air flow, cut off or connect the pipeline in the vacuum system. Vacuum valve closures are sealed with rubber or metal seals. The vacuum valve is the valve on the vacuum pump or vacuum ...

The dry vacuum pump makes the working volume oil-free, so it brings a lot of benefits. First, it enhances the reliability of the pump. Dry pumps are not affected by water vapor or dust particles like oil-sealed pumps, so they are more durable and require less maintenance. Using less oil also mean...

The vacuum pump can’t pump biogas residue directly. You understand it wrong. When the biogas slurry is pumped by a vacuum pump, a certain amount of negative pressure is generated in the iron tank of the biogas truck to work. Biogas vacuum pump is widely used in biogas digester, toilet, fish...