Requirements for Cleanroom Environments in Five Major Industries
2026-06-10
In recent years, with the development of modern science and technology and the deepening of a new round of industrial revolution, developed countries have successively implemented reindustrialization strategies. Digital and intelligent technologies have profoundly transformed the production modes and industrial forms of the manufacturing sector. Major breakthroughs in new materials, new energy and other technologies will trigger a new round of technological and industrial revolution.
Especially in the processing and production of high-tech products, the demands for precision machining, product miniaturization, high purity (high quality) and high reliability have set higher standards for the cleanliness level of production environments. On the other hand, the advancement of modern biomedicine has raised stricter requirements on controlling bacterial counts and microbial contamination in cleanrooms, to prevent microbial contamination and infection in medical treatment, pharmaceuticals, biological research, food production and other industries.
Industrial and biological cleanroom technologies will inevitably develop rapidly alongside technological progress and the constant upgrading of industrial products, becoming an indispensable technical symbol for modern industrial production and scientific experiments.
At present, cleanroom technology has been widely applied in various industries and environments that require protection against particulate and microbial contamination. Due to large disparities and different requirements across industries, the control contents and indicators vary accordingly. The following is a summary of cleanroom technology requirements for common industries.
Cleanroom Requirements for Pharmaceutical Production
Medicines are special products used to prevent and treat diseases as well as restore and regulate bodily functions. Their quality is directly related to human health and safety. If medicines are contaminated or cross-contaminated by microorganisms, dust particles and other pollutants during production, unexpected illnesses and hazards may occur.
Cleanroom Requirements for Medical Applications and Medical Research
Industrial clean technologies and industrial cleanrooms are widely used for environmental control in industries represented by integrated circuits. In the medical field, biological cleanrooms are mostly adopted to control microbial contamination. Microorganisms in biological cleanrooms mainly include bacteria and fungi with particle sizes above 0.2μm. Common bacteria are larger than 0.5μm, and most attach to other particulate matter. Biological contamination spreads not only via air, but also through human bodies and operators' clothing.
In medical research, microbial contamination control is essential for biological laboratories, sterile laboratories, and breeding rooms for special experimental animals used in biochemistry and medical experiments.
Cleanroom Requirements for Production of Precision Machinery and Fine Chemical Products
With the development of science and technology, the production and processing of many industrial products demand extremely low dust concentration in the working environment. This requires the production areas to reach specified air cleanliness levels and ensure the quality of various materials used in production. For example, dust contamination during film production may cause emulsion oxidation, reduced activity and pH fluctuation, which impair the photosensitive performance of films.
Cleanroom Requirements for Semiconductor and Integrated Circuit Production
The purification of semiconductor materials is an important foundation for the development of semiconductor devices. Due to the process requirements of large-scale and ultra-large-scale integrated circuits, high purity of raw materials and intermediates as well as cleanliness of the production environment are critical to product quality for obtaining high-purity silicon materials.
The yield of integrated circuit chips is related to defect density, which depends on the number of airborne particles. Therefore, the rapid development of integrated circuits demands extremely strict control over the size and quantity of airborne particles. Meanwhile, relevant requirements are also set for chemical pollution control in the production environment of ultra-large-scale integrated circuits.
Cleanroom Requirements for Cosmetics and Food Production
Most modern cosmetics contain proteins, vitamins, amino acids and plant extracts, which create favorable conditions for the growth and reproduction of bacteria, molds and other microorganisms. Thus, microbial contamination is a major factor affecting cosmetic quality. Cleanrooms for cosmetic production mainly control dust particles and microorganisms, with requirements similar to those for pharmaceutical production. Currently, the air cleanliness classes of cosmetic production cleanrooms can refer to pharmaceutical GMP standards.
In food manufacturing, strict facility management is essential to ensure food safety and hygiene, and prevent food poisoning caused by pathogenic Escherichia coli and Salmonella, as well as mold contamination in beverages. Since the 1990s, the WHO and many developed countries have adopted the HACCP system and established food production certification systems based on sanitary process management.
Cleanrooms are integral to electronics, pharmaceuticals, bioengineering, healthcare, food, cosmetics and military industries. They provide controlled environments for production and directly determine product quality. Since industries have different cleanliness requirements, cleanroom design must comply with relevant standards to meet specified environmental criteria.
