Q: In work related to clean environments, what key issues can particle counters mainly solve?

A: In work related to clean environments, particle counters mainly play a role in addressing key issues in aspects such as cleanroom/clean zone monitoring and verification, filter performance testing, pollution source tracking, and product quality control. The details are as follows.

Q: Do cleanrooms/clean zones meet the set cleanliness standards?

A: To determine whether cleanrooms/clean zones meet the set cleanliness standards, it is necessary to use particle counters for monitoring and verification in combination with different scenarios. After the construction or renovation of cleanrooms/clean zones, there may be differences between the actual cleanliness and the design standards. Monitoring can verify whether the design standards are met, providing a basis for subsequent put into use. Regular monitoring can timely grasp the changes in cleanliness during the operation of cleanrooms/clean zones to ensure they continuously meet the standards. Maintenance or repairs may affect the clean environment, and monitoring can verify the existence and extent of such impact. During production batch transitions, the production conditions of different products may change the clean state, and monitoring can ensure that the cleanliness before and after batch transitions meets the requirements. The purpose is to ensure the cleanliness of the production environment and prevent product contamination.

Q: Do air filters (such as HEPA filters) meet the required filtration efficiency?

A: Whether the filtration efficiency of air filters (such as HEPA filters) meets the requirements can be judged through tests using particle counters in different scenarios. Before installing a new filter, it is necessary to verify whether it meets the specifications to avoid affecting the filtration effect due to problems with the filter itself. Regular testing can monitor the performance attenuation of the filter during use and promptly detect the problem of reduced filtration efficiency. After replacing the filter, the performance of the new filter should be verified to ensure it can function properly. The purpose is to ensure that the filter can effectively remove particles in the air and protect the clean environment.

Q: Where are the particle pollution sources in cleanrooms/clean zones?

A: When the cleanliness of a cleanroom/clean zone exceeds the standard or the particle concentration in a specific area rises abnormally, it is necessary to use a particle counter to track the particle pollution source. By monitoring and analyzing the particle concentration in different areas at different times, the pollution source can be quickly located. The purpose is to quickly locate the pollution source, take measures to eliminate the pollution, and restore cleanliness.

Q: Are products contaminated by particles during the production process?

A: During the production process, particle counters can be used to determine whether products are contaminated by particles, and the focuses vary in different industry scenarios. In electronic component manufacturing, particles may cause short circuits or performance degradation, and monitoring can promptly detect pollution. In pharmaceutical production, particles may affect the purity and safety of drugs, and monitoring is an important link to ensure drug quality. In food production, particles may cause food spoilage or contamination, and monitoring can ensure that food meets safety standards. The purpose is to ensure that product quality meets standards and prevent product defects caused by particle contamination.