Controlled environment and cleanroom
The words cleanroom and controlled environment are often used interchangeably when talking about environment control in critical spaces. But there is a difference, and that difference is crucial. When it comes to controlled environments vs. cleanrooms, here’s what you need to know:
What’s a controlled environment?
A controlled environment, or critical environment, is an area that must have certain parameters controlled, specifically, pressure, temperature, and segregation. Many laboratories are considered controlled environments, as they have controlled temperature and pressure and are separated from other operations, such as manufacturing or shipping. Unlike cleanrooms, controlled environments do not necessarily have to meet certain standards for particle contamination.
What’s a cleanroom?
A cleanroom is a type of controlled environment, but one with much more stringent requirements. Cleanrooms require temperature and pressure control, as well as separation from the outside environment and other operations, but these things must be controlled to specific standards. Cleanrooms are classified by the maximum acceptable numbers of particles (by size) in the air per cubic meter, and must be regularly tested to ensure compliance to that standard (see more about cleanroom classifications here). Compared with other controlled environments, cleanrooms may require more energy, air, and advanced technology to maintain the cleanroom conditions.
Which do I need, a cleanroom or a controlled environment?
This depends on two factors: your application and your industry. If you’re packaging medical devices, you’ll need an ISO class 7 complaint cleanroom, or higher. If you have a process control laboratory for a chrome plating company, you aren’t required to meet a specific ISO classification, but definitely need to control the environment. You may even have different needs within your facility; you may need a controlled storage environment for sensitive materials that may not need to meet cleanroom standards, but have and ISO class 8 cleanroom for quality control testing.
Resources & Articles
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