Laboratory class iso5 clean room - non-electrostatic, mesh soft curtain, iron square, AC fan
Clean room cleanliness class classification
The cleanliness class of clean room is usually classified according to the maximum concentration limit of particles in the air with particle size greater than or equal to a specific size. According to the ISO 14644-1 international standard and China's GB50073-2013 national standard, cleanliness classes are categorized into ISO 1 to ISO 9 classes, as well as domestic classes 1 to 9. These grades reflect the concentration of particles in the air inside the clean room; the lower the concentration, the higher the cleanliness grade.
Specific Requirements for Cleanliness Classes
ISO 1 to ISO 9 classes
ISO 1: No more than 10 particles per cubic meter of air with a particle size of 0.1 micron, no more than 2 particles per 0.2 micron, no more than 2 particles per 0.3 micron, no more than 10 particles per 0.5 micron, no more than 100 particles per 1 micron, and no more than 10,000 particles per 5 micron.
ISO 2: not more than 100 particles per cubic meter of air of 0.1 micron size, not more than 24 of 0.2 micron, not more than 24 of 0.3 micron, not more than 100 of 0.5 micron, not more than 1,000 of 1 micron, and not more than 10,000 of 5 micron.
ISO 3 to ISO 9: and so on, with the number of particles of a given size per cubic meter of air increasing in order.
Domestic Class 1 to Class 9
Class 1: No more than 10 particles per cubic meter of air of 0.1 micron particle size, no more than 10 particles per cubic meter of air of 0.2 micron, no more than 10 particles per cubic meter of air of 0.3 micron, no more than 100 particles per cubic meter of air of 0.5 micron, no more than 1,000 particles per cubic meter of air of 1 micron, and no more than 100,000 particles per cubic meter of air of 5 micron.
Class 2 to Class 9: The number of particles of a specific size per cubic meter of air increases in sequence.
Cleanliness Classification Table
FFU (Fan Filter Unit): As the core component of the clean room, the FFU is responsible for inhaling the outside air and carrying out preliminary filtration through the built-in filter.
Filtration System: Including primary filters and high efficiency filters (HEPA or ULPA), used to capture and filter out particles in the air, to ensure that the gas sent into the clean room to achieve a predetermined level of cleanliness.
Wind speed control: By adjusting the wind speed of the FFU, the constant flow rate of the air inside the clean room is maintained, usually set at 0.45m/s±20%, so as to form a stable unidirectional airflow and avoid cross-contamination.
Air quality monitoring: The clean room is equipped with sensors to monitor the air quality in real time to ensure that the cleanliness meets the set standards.
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