净化车间需要有什么要求和标准

　　有几个因素可以决定你需要什么样的净化车间环境。每个行业都有自己的规格要求。主要问题是保证空气中存在什么类型的粒子?

　　There are several factors that can determine what kind of cleanup workshop environment you need. Each industry has its own specifications. The main question is to ensure what type of particles exist in the air.

　　车间要求是封闭的空间，几乎没有污染物。灰尘、细菌或病毒可以减少某些类型的实验室工作。

　　Workshop requirements are closed space, almost no pollutants. Dust, bacteria or viruses can reduce certain types of laboratory work.

　　ISO 14644标准描述洁净室的空气质量。较旧的参考资料是“联邦标准209清洁房间和清洁区域内的微粒清洁度等级”

　　The ISO 14644 standard describes the empty quality of the clean room. The older reference is the Federal Standard 209 for cleaning rooms and cleaning areas for particulate cleanliness.

　　每立方米不超过352,000粒0.5微米或更多的微粒。另一个标准是每小时换空气的次数。洁净室以每小时60至750次的速度交换空气以过滤外部空气。

　　No more than 352000 microns or more particles per cubic meter. Another standard is the number of air changes per hour. The clean room exchanges air at a speed of 60 to 750 times an hour to filter the external air.

　　总之各行业要打造符合行业标准的净化车间。比如计算机芯片制造商可能需要更干净的过滤。一个门窗厂家就可能不太需要干净的环境了。