The biological safety cabinet (BSC) also called as Biological Safety cabinet is an enclosed, ventilated laboratory workspace for safely operating with materials contaminated with (or potentially contaminated with) pathogens requiring a specific Biological Safety level. There are several types of BSC exist, distincted by the level of biocontainment required. 

There are several methods to tdefine the biocontainment level but the most commonly used one is the rule issued by the U.S. Centers for Disease Control and Prevention (CDC), which classifies BSC into three classes with increasing biocontainment level from 1 to 3, BSC- I, BSC- II and BSC- III. Class I cabinets provide personnel and environmental protection but no product protection. In fact, the inward flow of air can contribute to contamination of samples. Inward airflow is maintained at a minimum velocity of 75 ft/min (0.38 m/s). These Biological Safety Cabinet are commonly used to enclose specific equipment (e.g. centrifuges) or procedures (e.g. aerating cultures) that potentially generate aerosols. Biological Safety Cabinet of this class are either ducted (connected to the building exhaust system) or unducted (recirculating filtered exhaust back into the laboratory). Class II cabinets provide both kinds of protection (of the samples and of the environment) since makeup air is also HEPA-filtered. There are four types: Type A1 (formerly A), Type A2 (formerly A/B3), Type B1, and Type B2. The Type A1 cabinet, formerly known as Type A, has a minimum inflow velocity of 75 ft/min; The Type A2 cabinet, formerly designated A/B3, has a minimum inflow velocity of 100 ft/min; The Type B1 and B2 cabinets have a minimum inflow velocity of 100 ft/min. The Class III cabinet, generally only installed in maximum containment laboratories, is specifically designed for work with BSL-4 pathogenic agents, providing maximum protection. The enclosure is gas-tight, and all materials enter and leave through a dunk tank or double-door autoclave. Gloves attached to the front prevent direct contact with hazardous materials (Class III cabinets are sometimes called glove box). These custom-built cabinets often attach into a line, and the lab equipment installed inside is usually custom-built as well.

Global biological safety cabinet (BSC) market was valued at 503.16 Million US$ in 2018 and is projected to reach 718.60 Million US$ by 2024, at a CAGR of 6.12% during the forecast period.

Key players in global biological safety cabinet (BSC) market include: NuAire, ESCO, Telstar Life-Science, The Baker Company, Labconco, Thermo Scientific, BIOBASE, Suzhou ANTAI Airtech, Beijing Donglian Haer Instrument Manufacturing, Haier, Aertai Laboratory Equipment Co.,Ltd etc.