A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physical-chemical methods to evacuate air from a sealed container to achieve a vacuum. In layman's terms, a vacuum pump is a device that improves, generates, and maintains a vacuum within a closed space using various methods; common types of vacuum pumps include dry screw vacuum pumps, water ring pumps, reciprocating pumps, slide valve pumps, scroll pumps, Roots pumps, and diffusion pumps, among others.

An oil-free vacuum pump is a mechanical vacuum pump that operates without the need for any lubricating oil. These pumps are durable, feature a simple design, are easy to operate, easy to maintain, and do not contaminate the environment. Oil-free vacuum pumps are versatile, serving both as vacuum pumps and compressors, and have a wide range of applications.

Oil-free vacuum pumps have lower vacuum levels and lower air extraction capacity compared to oil pumps, but they are compact, easy to install, maintain, and move. They do not produce smoke or pollute the environment, making them particularly suitable for use in high-demand laboratories. They are also among the commonly stocked equipment in laboratories.