Concept and application of controlled not classified environment—New development trend of biocleaning technology

Discusses the evolution of the cleanroom technology for the control measures of the high-tech process environment, develops the concept of controlled not classified environment, expands its application field, and gives the new connotation of the three principles of “the area is easy to be clean, the entrance and exit are controlled and the ventilation is filtered”. The concept of controlled not classified environment changes the traditional control concept, emphasizing the control measures and process control, diluting the target control and no cleanliness or aseptic indicators, and emphasizes the whole process control measures, which makes the control measures not only limited but also flexible, and more suitable for the actual demand of process technology, so it is a new development trend of the biocleaning technology.