Clean room grade standard is introduced

Clean room grade standard is introduced
Clean room needs to be a certain range the particles in the air, bacteria and other harmful air pollutants, and will be clean indoor temperature, cleanliness, interior pressure, air velocity and air distribution, noise, vibration, and lighting, static control within the scope of a certain demand, usually according to the lab, the number of particles in the air for clean room.
The classification of the clean room according to different countries have different levels of regulation, although at present the world a custom specifications, but common in U.S. Federal standards [Federal Standard (FS) 209 e, 1992].
Which need to be aware of, the division of A, B, C, D level is A reference to ISO standards (the approach adopted by the European Union), its itself contains the static and dynamic requirements.
The old version GMP adopted is the division between the clean way, the old division between the clean only static concept, does not require dynamic.
In the United States federal standards (A to D) in 209, in A cubic foot of air measurement is equal to or greater than 0.5 mm on the number of particles, and the count is used for classifying the cleanroom. New 209 e version of the standard to accept the metrics. The federal standard 209 e used in domestic. The new standard is the international standard organization of TC 209.
Both the standard according to the number of particles in laboratory air clean room are classified. Clean room FS 209 e classification standard and requirements of ISO 14644-1 specific particle counter measurements and calculations, for the cleanroom or clean area cleanliness level classification.