In laminar flow, the air moves in how many direction(s)?

In laminar flow, the air moves in one direction. This type of airflow is characterized by smooth, parallel streams of air that do not mix with each other. In a laminar flow hood, for example, the air is drawn in from the back and pushed toward the front in a uniform manner. This unidirectional movement is crucial for creating a sterile environment, as it helps to minimize the risk of contamination by maintaining a steady flow that can effectively carry particulates away from compounding areas. The unidirectional nature of laminar flow is key to its effectiveness in providing a controlled environment for sterile preparations in pharmacy settings.