A sealed laboratory is a controlled environment designed to prevent the entry or exit of contaminants. This type of facility is often used in scientific research, particularly in fields like microbiology and chemistry, where maintaining purity is crucial. The laboratory is equipped with specialized ventilation systems and airlocks to ensure that external factors do not interfere with experiments. In a sealed laboratory, researchers can safely handle sensitive materials, such as pathogens or toxic chemicals, without risking exposure to the outside environment. This setup helps ensure accurate results and protects both the researchers and the surrounding community from potential hazards.