What is a clean room?

Clean room is also called clean room, clean plant, clean room and so on. Clean room is a more formal way to call, but feel the use of clean room manufacturers, workshop operators prefer to call the clean room.

Clean room of the common point, is very clean space, it is impossible to achieve the real dust. Because dust, bacteria, if the particles are very small will float in the air, the impact on the human body may not be great, but the impact of some of the production process is great.

For example, in the semiconductor industry, when the particle size reaches half the size of the integrated circuit node, it becomes destructive particles, which affects the manufacture of integrated circuits. Therefore, the semiconductor industry has very high cleanliness requirements.

For example, in the new energy automobile industry, whether it is lithium iron phosphate, or lithium ternary batteries, all need to be completed in the clean room. The spraying process of automobiles also needs to be completed in a clean room, which is one of the reasons why repair shops and 4S stores can never do the original paint standard.

For example, in the pharmaceutical industry, sterility, high cleanliness, and constant temperature and humidity are required to make qualified products.

In addition to the above industries, there are many other industries that make extensive use of cleanroom technology. The clean room is also divided into levels, currently prevailing 3 kinds of division methods.

The first is the U.S. Federal 209E, the United States has been abolished, but China is still accustomed to follow this call, such as ten, hundred, thousand, ten thousand, one hundred thousand, one hundred thousand, three hundred thousand and so on. You hear these statements, are in accordance with the U.S. 209E standard. The smaller the number, the higher the grade.

The second is the latest international standard, ISO14644-1, which is generally divided into nine grades, with grade 1 being the highest.

The third is the WHO grading standard adopted by the GMP pharmaceutical industry, using ABCD to distinguish the level of the clean area.

The three levels are interchangeable, the international ISO14644 class5 is equivalent to GMP level A, B (U.S. 209E hundred level), class7 is equivalent to C (10,000), class8 is equivalent to D (100,000).