A clean room is also called a clean room or clean room. It is the foundation of pollution control. Without a dust-free room, it is impossible to mass-produce pollution-sensitive components. In FED-STD-2, a cleanroom is defined as a room with air filtration, distribution, optimization, construction materials, and equipment in which specific routine operating procedures are used to control airborne particulate concentrations to achieve appropriate levels of particulate cleanliness. Dust-free room refers to a specially designed room in which pollutants such as particles, harmful air and bacteria are removed from the air in a certain space, and indoor temperature, cleanliness, indoor pressure, airflow velocity and distribution, noise, vibration, lighting and static electricity are controlled within a certain range.

I. The difference between industrial clean room and biological clean room is as follows

Comparison project: industrial clean room, biological clean room

1. Research Objects (main):

Dust and particles contaminate only once

Living particles such as microorganisms and bacteria are constantly growing and propagating, which will cause secondary pollution (metabolites and feces)

2, control method purification measures:

The main method is filtering. Coarse, medium, high three levels of filtration, coarse, medium, high, high four levels of filtration and chemical filters, etc

Mainly adopt: eradicate microorganism growth condition, control microorganism reproduction, reproduction and cut off microorganism reproduction way. Filtration, sterilization, etc

3. Control objectives

Control the concentration of harmful particle size

Control the production, propagation and diffusion of microorganisms and their metabolites

4. Harm to the production process:

As long as the dust in the key parts will cause great harm to the product

Harmful microorganisms must reach a certain concentration to cause harm

5. Clean room building material requirements:

All materials (wall, roof, floor, etc.) do not produce dust, dust accumulation, wear

All materials should be resistant to water and rot and should not provide conditions for microbial propagation

6. Control of entry of people and objects:

When people enter, they have to change their shoes, clothes and showers. It should be cleaned and wiped down. People and things to split, clean to split

People enter the room to change shoes, clothes, bath, sterilization; Wipe, clean, sterilization; Air into the filter, sterilization, shunt, cleaning shunt

7. Test:

The particle counter can detect the instantaneous concentration of dust particles, and display and print

Microbiological assays do not measure instantaneous values and the number of colonies can only be read after 48 hours of culture