A cleanroom is a controlled environment designed for manufacturing and research, where airborne particles, temperature, and humidity are maintained within specified limits.

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Achieving the required cleanliness levels involves specialized ventilation systems, controlled personnel access, appropriate cleanroom garments, and material transfer systems such as pass boxes, which help minimize contamination.

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HEPA (High-Efficiency Particulate Air) filtration systems continuously remove airborne particles, maintaining the required environmental conditions.

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Cleanrooms are classified according to airborne particle concentration under ISO 14644-1, as outlined below.