Performance testing and certification of clean engineering are mainly considered in the following aspects:
1. Working state of clean room
In the construction contract of the clean room, only the basic vacancy test of Zui is usually specified, while the static and dynamic tests are often omitted because of the tight time limit. It is suggested that both contractors and owners test the clean room under static and dynamic conditions. This will ensure that the construction of the clean room meets the design requirements. The comparison of test results under two different conditions, static and dynamic, will provide a very effective help for the analysis of the problems existing in the clean room. For example, under static conditions, the cleanliness reaches the standard, but under dynamic conditions, it exceeds the standard. This may be due to poor cleanroom management: non-standard cleaning when installing machines, inappropriate cleaning procedures, inadequate discipline management, incorrect machine placement (blocking the return vent or blocking the air supply of filters) and so on. Therefore, it is suggested that the clean room should be tested in both dynamic and dynamic conditions.
2. Clean room testing standards and practices

All cleanroom tests are basically based on internationally recognized standards (e.g. ISO14644-1; IEST-RP-CC006.2; NEBB manual and terminated FS-209E). These standards and practices provide Zui's basic guidance for the testing and certification of clean rooms. In fact, owners and builders of clean rooms have different agreements on technical indicators, testing methods and acceptance standards of clean rooms due to the requirements of products and processes. Therefore, most acceptance criteria are agreed upon by the owner and builder of the cleanroom through consultation and referring to the recommendations of the professional cleanroom testing and certification company. Since independent third-party testing and certification companies can usually propose suitable solutions for cleanroom testing, we recommend that owners and builders invite testing and certification companies to participate in the discussion of cleanroom technical parameters, testing methods and acceptance criteria.

3. Selection of test items
Clean room test items include filter air speed uniformity, filter installation leak detection, differential pressure, airflow parallelism, cleanliness, noise, illumination, wet/temperature and so on. These are the basic test items, which include the main and auxiliary test items. These projects should be consistent with the standards and parameters of the preliminary design of the clean room zui, and the test certification should be completed before the clean room is handed over to the owner. Of all the test items, four main items (filter wind speed and uniformity, filter installation leak detection, differential pressure and cleanliness) are important and basic for zui. It must be completed before the equipment enters the clean room. Other auxiliary test items such as airflow parallelism (only applicable to one-way flow clean room), temperature, humidity, illumination, noise also need to be completed, because they are related to the movement and environmental parameters of air in clean room. It is generally believed that these auxiliary tests are needed at least under dynamic conditions. After Zui, the owner can also choose to include floor resistance test (point-to-point or point-to-ground), restoring test, integrity test, vibration test, particle sedimentation test, static (anti-static equipment performance) test.
4. Clean room certification report
In the construction unit, the tester must submit a detailed test report and conclusion after the owner and the third party inspection organization have completed the inspection of the clean room (including the part of re-testing). Good writing and editing skills are very important for submitting a report, which will be kept in the background by the owner, the construction unit and the testing company.
The professional technicians of Ed Purification Engineering design a reasonable plan to adapt to the production process and the cost of the project. The design technical indicators meet the national standard of clean room. The experienced construction team of the purification project is fast and efficient, and the after-sales service is perfect. To learn more about the medical purification industry, please pay attention to the Wechat Public No. Aide-188 (Ed Purification and Oxygen Supply)