洁净室环境

What is a cleanroom?

Research fields and industries that require a very clean environment to conduct lab experiments and manufacture products use cleanrooms. They are enclosed spaces that minimise the amount of contaminants like bacteria and particles in the air and on surfaces, and can control temperature, humidity, and air pressure. These contaminants would otherwise compromise testing or the quality of manufactured goods. Sources of contamination include people and the equipment and processes used in the facility itself. Producing pharmaceutical drugs and microelectronics, or growing bacteria cultures in Petri dishes, all require cleanroom environments to varying degrees.

These types of rooms are classified depending on the amount and size of particles per cubic metre (m3) of air. The ISO 14644-1 cleanroom classification system accounts for particles from 0.1 µm to 5 µm per m3 and has 9 different classes. The British BS 5295 classification system, on the other hand, measures the amount of particles 0.5 µm to 25 µm in size per m3 and has 4 classes. These classes determine which equipment regulations and codes of conduct are required.

How cleanrooms minimise contamination

Goddard Space Flight Center

探索世界上最大的洁净室

These rooms are used in plenty of industries, from micro-technology to aerospace engineering. The High Bay Cleanroom at NASA’s Goddard Space Flight Centre is the world’s largest, however, and is where the sensitive instruments for the Hubble Space Telescope are assembled, housed, and tested. A speck of dust or fingerprint could result in a failed mission, so workers must follow strict cleanroom guidelines. They must wear a specialised garment system and pass through a number of chambers that rid them of as many particles as possible: one with a sticky floor to remove dirt from shoes, as well as an air shower. The High Bay Cleanroom also uses an entire wall of special high-efficiency particulate air (HEPA) filters, which circulate one million cubic feet of air every minute.

高海湾洁净室具有ISO-7的分类,这意味着不超过352,000个机载颗粒的大小为0.5μm或更大,可以在立方米的空气中(人发直径为75-100μm)。高海湾洁净室的优秀过滤系统和仔细指导所有工作,确保任务为哈勃太空望远镜提供服务。

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两位工程师在无菌洁净室套装控制制造机械工作

哪些产品适合洁净室课程?

这些房间中使用的设备是污染的重要来源,并使用正常的日常物品可以拼写灾难。不同的课程需要不同的严格程度,因此了解允许的产品非常重要。

Edding 8011洁净室标记黑色

edding 8011 cleanroom marker

此标记已通过ISO-2和3级洁净室进行认证。凭借其金属和无标签设计和0.6毫米圆形笔尖,EDDID 8011释放了最小的颗粒物质,如灰尘,是水和涂抹的,配备有夹子的方便盖。

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