Several measures are taken to maintain the cleanliness of a clean room: - Air Filtration: High-Efficiency Particulate Air (HEPA) and Ultra-Low Penetration Air (ULPA) filters are used to remove particles from the air. - Air Flow Patterns: Laminar airflow systems ensure that air flows in a single direction, reducing turbulence and the risk of particle contamination. - Strict Protocols: Personnel must follow strict protocols, including wearing special garments, using air showers, and minimizing movements to reduce particle generation. - Regular Cleaning: Surfaces and equipment are regularly cleaned with specialized materials and techniques to prevent contamination.