The ultimate goal of laboratory purification for cleanliness testing is to achieve clean air, ensure that the samples are free from contamination, and ensure reliable testing results. The requirements for laboratory purification are very high and strict. Any small mistake can cause significant loss of experimental results, even a speck of dust that cannot be seen by the naked eye. In order to achieve 100% cleanliness of the air, laboratory purification requires comprehensive control of the laboratory structure.

The cleanliness testing laboratory of Xianshi strictly follows the ISO 16232/VDA19 cleanliness testing standards in its planning.