Cleanliness level and testing method of cleanroom

Dust-Free Room，即Cleanroom或Clean Workshop，广泛Application于高Technology制造、生物Technology、医疗卫生、精密加工等行业。为了EnsureDust-Free Room的性能，必须根据特定的标准设定Cleanliness等级并进行相应的Testing。以下是Dust-Free Room的Cleanliness等级及其Testing方法：

1、 Cleanliness level

The cleanliness level of cleanrooms is usually classified according to international or industry standards, such as the US Federal Standard 209E and China's GB 50073-2013. Common cleanliness levels include:

1. Grade 100: The number of particles with a diameter greater than 0.5 μ m per cubic foot of air shall not exceed 100.
2. Thousand level: The number of particles with a diameter greater than 0.5 μ m per cubic foot of air shall not exceed 1000.
30000 level: The number of particles with a diameter greater than 0.5 μ m per cubic foot of air shall not exceed 10000.

2、 Testing method

In order to test the cleanliness level of a cleanroom, the following methods are usually used:

1. Particle counting method: Use a particle counter to measure the number and size of particles in the air inside a cleanroom. This method can quickly and accurately determine the cleanliness level of the cleanroom.
2. Floating bacteria detection method: By cultivating microorganisms in the air in a clean room and measuring their quantity and type, the cleanliness of the clean room's microorganisms can be evaluated.
3. Differential pressure method: By measuring the pressure difference in different areas of the clean room, the efficiency of air flow and the sealing performance of the clean room can be determined.
4. Optical detection method: Use optical instruments (such as microscopes or video microscopes) to observe the particle distribution and movement in the clean room, in order to evaluate its cleanliness.

Among the above methods, particle counting is the most commonly used detection method because it can quickly and accurately provide clean room cleanliness data. Other methods are selected and applied based on specific needs and standards.

总之，Dust-Free Room的Cleanliness等级是EnsureProductQuality和工作环境的重要指标。Pass上述的Testing方法，可以有效地评估Dust-Free Room的性能并采取相应的措施进行改进和优化。