Detail：

A fume hood, also known as a smoke hood or fume hood, is a commonly used local exhaust equipment in laboratories. Its purpose is to reduce the exposure of experimenters to toxic and harmful gases, ensuring the safety and overall functionality of the laboratory environment.

There are many types of fume hoods, and due to their different structures and usage conditions, their exhaust effects are also different. The performance of a fume hood mainly depends on the cross-sectional area and air movement through the fume hood.

Structurally, it is mainly divided into:

1) Universal type: suitable for general chemical laboratories.

2) Pipeline free type: Built in high-efficiency activated carbon filter, can be directly discharged indoors.

3) Supplemental air type: Supplement air from outdoors to reduce the load on laboratory air conditioning.

4) Connected type: Expand experimental space and provide convenience for large instruments.

5) Desktop type: a fume hood installed on the experimental platform.

6) Two sided type: can be operated from both sides.

7) Floor standing type: suitable for large experimental equipment.