In modern industrial production, cleanrooms serve as the core environment for controlling particulate pollution, and their classification standards directly determine the cleanliness and product quality of the production process. According to the international standard ISO 14644-1 and the Chinese national standard GB 50073-2013, the cleanroom classification is based on a unit volume of air concentration of 0.5 μ m; The concentration of m particles is used as the basis for classification, ranging from level 100 (ISO 5) to level 100000 (ISO 8), with different levels corresponding to different industry demands and technical requirements. Shenzhen Huajianjing Construction Engineering Co., Ltd. (referred to as Huajianjing) is a leading enterprise in the field of clean engineering in China. With years of technical accumulation and industry experience, it deeply analyzes the classification standards and applicable scenarios of clean rooms, and provides customized solutions for high-precision industries such as semiconductors, biomedicine, and precision manufacturing.
1、 Cleanroom Classification Standards: Scientific Definition from Class 100 to Class 100000
The core indicator of cleanroom classification is the concentration of suspended particles in the air, which is classified according to the international standard ISO 14644-1 and the Chinese national standard GB 50073-2013. At≥ 0.5μ For example, for Class 100 cleanrooms (ISO 5), the number of particles per cubic meter of air should not exceed 3520, while for Class 100000 cleanrooms (ISO 8), it is allowed not to exceed 3520000. This order of magnitude difference directly reflects the strictness of particle control in cleanrooms.
The specific level classification is as follows:
- Class 100 (ISO 5) : 0.5μ per cubic meter of air; M particles≤ 3520,≥ 5μ M particles≤ 29 particles. Suitable for scenarios with extremely high sensitivity to particles, such as semiconductor chip manufacturing and high-precision optical component processing.
- Class 1000 (ISO 6) : 0.5μ per cubic meter of air; M particles≤ 35200,≥ 5μ M particles≤ 293 particles. Commonly found in fields such as biomedical laboratories and precision electronic assembly.
- Class 10000 (ISO 7) : 0.5μ per cubic meter of air; M particles≤ 352000,≥ 5μ M particles≤ 2930 particles. Widely used in industries with moderate cleanliness requirements such as food packaging and cosmetics production.
- 100000 level (ISO 8 level) : 0.5μ per cubic meter of air; M particles≤ 3520000,≥ 5μ M particles≤ 29300 particles. Suitable for scenarios with low requirements for particle control, such as general electronic component manufacturing, warehousing and logistics.
Hua Jianjing pointed out that the selection of cleanroom grade should comprehensively consider product characteristics, production processes, and cost-effectiveness. For example, the semiconductor industry has a very low tolerance for particle pollution due to the continuous reduction of chip line width, and must adopt a Class 100 clean room; The food packaging industry can balance cleanliness and economy through cleanrooms of 10000 or 100000 levels.
2、 Class 100 cleanroom: Semiconductor and Biomedical; Lifeline”
A Class 100 cleanroom is a part of clean engineering; Pyramid tip” Its core value lies in providing a dust-free environment for high-precision manufacturing. In the semiconductor field, photolithography, etching and other processes in the chip manufacturing process are extremely sensitive to particle contamination, and any≥ 0.5μ Particles of m can cause circuit short circuits or performance degradation. Huajianjing once designed a Class 100 cleanroom for a well-known semiconductor enterprise, which controlled the particle concentration within the ISO Level 5 standard by using an FFU (Fan Filter Unit) circulation system, airtight construction technology, and intelligent monitoring platform, ensuring the yield rate of 7nm process chips.
The biopharmaceutical industry also relies on Class 100 cleanrooms. In the production of sterile preparations, microbial contamination may cause drug spoilage or patient infection. Huajianjing has created a Class 100 clean workshop for a biopharmaceutical company, which achieves dynamic aseptic control through laminar flow purification technology, positive pressure protection design, and real-time microbial monitoring system, meeting the strict requirements of the FDA (US Food and Drug Administration) for aseptic drug production.
3、 Class 10000 and Class 100000 Cleanrooms: Precision Manufacturing and Livelihood Fields; Economic Choice;
Although the cleanliness of Class 10000 and Class 100000 cleanrooms is lower than that of Class 100, they have become the mainstream choice in precision manufacturing and people's livelihood fields due to their cost advantages and applicability. In the field of precision electronic assembly, a Class 10000 clean room can effectively control contamination such as flux splashing and metal debris during the soldering process, ensuring the reliability of circuit boards. Huajianjing designed a 10000 level clean workshop for a consumer electronics enterprise, which reduced operating costs by 30% while meeting production needs through innovative solutions such as zone purification and local 100 level laminar flow.
Class 100000 cleanrooms are widely used in industries such as food and cosmetics. Taking food packaging as an example, a 100000 level environment can prevent physical pollution such as dust and insects, while extending product shelf life through temperature and humidity control. Huajianjing has built a 100000 level clean workshop for a dairy product enterprise, which adopts a three-level filtration system of primary efficiency, medium efficiency, and high efficiency, combined with ozone disinfection and air circulation technology, to stabilize the particle concentration in the packaging line at ISO 8 standard, significantly improving product hygiene indicators.
4、 Huajianjing's technological advantages: full chain services from design to operation and maintenance
As a professional service provider in the field of clean engineering, Huajianjing has formed a; Design construction acceptance operation and maintenance; The full chain service system. In the design phase, the company relies on BIM (Building Information Modeling) technology for 3D simulation, optimizing airflow organization and equipment layout; During the construction phase, modular assembly technology is adopted to shorten the construction period and reduce cross contamination; During the acceptance stage, precision instruments such as laser particle counters and anemometers are used for multi parameter testing to ensure compliance with ISO standards; During the operation and maintenance phase, remote monitoring, regular maintenance, and emergency response services are provided to ensure the long-term stable operation of the clean room.
Huajianjing's technical team has rich industry experience and has participated in the formulation of multiple national level clean engineering standards. The company's independently developed; Huajianjing Intelligent Clean Management System; It can monitor key parameters such as temperature and humidity, pressure difference, and particle concentration in real time, and predict equipment failures through AI algorithms, improving operation and maintenance efficiency by more than 40%.
5、 Future Trends: Intelligent and Green Cleanroom Technology
With Industry 4.0 and; Dual carbon; With the advancement of goals, clean room technology is developing towards intelligence and greenness. Huajianjing predicts that in the future, cleanrooms will integrate more IoT sensors to achieve autonomous adjustment of environmental parameters; Meanwhile, by adopting technologies such as low-energy fans and photovoltaic power generation, the energy consumption of clean rooms can be reduced. For example, the company is currently developing; Zero Carbon Cleanroom; The solution can reduce the energy consumption of Class 10000 cleanrooms by more than 25% through the use of heat recovery systems and renewable energy utilization.
The classification standard for cleanroom levels is a modern industrial production standard; Invisible Guardian; Its scientificity and applicability are directly related to product quality and industry competitiveness. Shenzhen Huajianjing Construction Engineering Co., Ltd., with its profound technical expertise and industry insights, provides precise clean engineering solutions for different fields, helping Chinese manufacturing move towards high-end and intelligent development. In the future, Huajianjing will continue to be driven by innovation, promote clean room technology upgrades, and provide more efficient and environmentally friendly clean environments for global customers.
