Test method for cleanliness of clean room
After the construction of the clean room is completed, in order to prove compliance, the cleanliness of the clean room is generally tested. Cleanliness refers to the degree of dust contained in the air in the air environment. In general, it means the number of particles with a certain size or more contained in a unit volume of air. High dust content results in low cleanliness, and low dust content results in high cleanliness. This shows how important the cleanliness test is in a clean room. So do you know what the test method of cleanliness of the clean room is? The following Shengfa refrigeration technicians introduce you:
Test method for cleanliness of clean room:
The cleanliness test of a clean room should generally be divided into three methods: testing under air conditions, testing under dynamic conditions, and testing under static conditions.
1.Test under empty conditions
It means that the dust-free workshop system has been in normal operation, but the process equipment and production personnel have not been tested.
2.Test under dynamic conditions
It means that the dust-free workshop system is in the normal running state, and the process equipment and production personnel have been tested.
2.Test under static conditions
It means that the clean room system is in normal operation, the process equipment has been installed but not running, and the test is performed without indoor production personnel.
The content introduced above is the test method for cleanliness of the clean room. It is worth noting that, in general, the test method for cleanliness of air in a clean room is suitable for counting dust particles with a particle size greater than or equal to 0.5 microns, and the light scattering particle counting method should be used. For counting dust particles with a particle size greater than or equal to 5 microns, a filter microscope counting method can also be used.