[Science Tips] l What standards should the cleanroom wiper in the clean room meet? The clean room should not only use a clean cloth, but also choose a clean cloth of the corresponding purification level. Only one hundred-class clean cloth can be used in a hundred-class clean room. The dust-free cloth is made of 100% polyester fiber double woven, the fiber diameter is small, so it is very soft, easy to wipe sensitive surfaces, friction does not detach the fiber, has good water absorption and cleaning efficiency. Therefore, the application field of the dust-free cloth is very wide, and the dust-free cloth can be used repeatedly after being properly cleaned. What standards does the clean cloth in the clean room need to meet? In fact, the clean cloth of a clean room is mainly considered and judged from two aspects: