A cleanroom is a specialized space designed with professional techniques to control pollutants such as dust and microorganisms in the air at extremely low concentrations, while strictly regulating environmental parameters like temperature, humidity, pressure, and air flow. Its core objective is to provide a clean and stable environment for high-precision production, scientific research, and experiments, preventing pollutants from affecting product quality or experimental results.
1. High-Precision Cleanliness Control
- Air Filtration System: Through multi-stage filtration by primary, medium, high-efficiency (HEPA), or ultra-high-efficiency (ULPA) filters, airborne particles (such as dust, bacteria, viruses, etc.) are removed. Cleanliness levels can reach ISO 1 to ISO 9 (or Federal Standard 209E Class 1 to Class 100,000), meeting the needs of different industries (e.g., ISO 1 for semiconductor manufacturing and ISO 5 for pharmaceutical production).
- Airflow Organization Design: Unidirectional flow (vertical or horizontal), non-unidirectional flow (turbulent), or mixed flow patterns are adopted. Reasonable supply and return air layouts ensure uniform air movement, reducing eddies and pollutant accumulation.
2. Precise Regulation of Environmental Parameters
- Temperature and Humidity Control: Equipped with a constant temperature and humidity air conditioning system, the temperature deviation is typically controlled within ±0.5ºC~±2ºC, and humidity deviation within ±2%~±5%. This prevents fluctuations from affecting precision equipment operation or production processes (e.g., chip manufacturing is extremely sensitive to temperature and humidity).
- Pressure Control: By adjusting pressure differences (usually maintaining 5~10Pa positive or negative pressure), it prevents external pollutants from invading or internal pollutants from spreading, suitable for isolation between different clean areas (e.g., various process zones in pharmaceutical workshops).
3. Special Requirements for Materials and Structure
- Walls and Floors: Made of dust-resistant, corrosion-resistant, and easy-to-clean materials (such as stainless steel, epoxy resin coatings, PVC panels), with smooth and seamless surfaces to reduce dust adhesion and microbial growth.
- Sealing Design: Parts like doors, windows, and pipeline interfaces are sealed to prevent external polluted air from penetrating and internal airflow from leaking.
4. Microbial and Contaminant Control
- Disinfection and Sterilization: Equipped with ultraviolet lamps, ozone generators, formaldehyde fumigation, and other disinfection equipment to periodically sterilize the space, meeting the aseptic requirements of industries such as pharmaceuticals and food.
- Personnel and Material Management: Personnel must wear cleanroom suits, masks, gloves, and other protective equipment, while items must pass through buffer facilities like air showers and transfer windows for cleaning before entry, minimizing pollutant introduction at the source.
5. Energy Consumption and Operational Costs
- High Energy Consumption: Due to the continuous operation of air filtration, temperature, and humidity control systems, energy consumption is typically higher than ordinary workshops. Energy-saving designs (such as variable-frequency fans and heat recovery systems) are required to reduce costs.
- Intelligent Monitoring: The PLC control system real-time monitors parameters (e.g., dust particle concentration, pressure difference, temperature, humidity) and automatically adjusts equipment operation to ensure environmental stability.
6. Wide Range of Applications
- Semiconductor and Electronics Industry: Used in chip manufacturing and precision electronic component assembly to prevent particle contamination from causing circuit short-circuits or component failures.
- Pharmaceuticals and Biotechnology: Meets the cleanliness requirements for sterile preparation production, cell culture, and operating rooms, avoiding microbial contamination that may lead to product failure or infection risks.
- Food and Cosmetics: Controls dust and microorganisms to ensure product hygiene and safety and extend shelf life.
- Aerospace and Precision Machinery: Used for high-precision component processing and assembly to ensure stable product performance (e.g., manufacturing aircraft engine blades).
Cleanliness |
Number of particles ≥0.1μm / cubic meter |
Number of particles ≥0.5μm / cubic meter |
ISO 1 |
10 |
0.35 |
ISO 4 |
10,000 |
350 |
ISO 5 |
100,000 |
3,500 |
ISO 8 |
100,000,000 |
350,000 |
SUZHOU HJCLEAN TECH CO., LTD was established in 2004 in Suzhou, jiangsu Province, The company's headquarters is located in suzhou industrial Park, and production bases have been established in Suzhou and jingjiang. Branches are set up in wuhan, Chengdu, Xi'an, jinan and Shenyang across the country,The company has been focusing on the research, development, production, sales and customized services of aseptic ultra-clean equipment, testing instruments and cleanroom engineering. It mainly produce equipments and instruments of clean room deals in business of clean room projects for pharmaceutical factory, laboratory, medical organization etc...The company has more than 50 patents products, ISO9001 certification and CE certification. The company is a member of china clean room association and is one of jiangsu Engineering Technology Research Center. We are in a leading position in the field of clean room.The company's products including sterility isolator, negative pressure isolator ,vhp pass box,vhp generator, atomized sterilizer , bag in bag out filter system , suspended particle online monitoring system, airborne particle counter, air sampler, airborne bacterial counter, air flow capture hoodaerosol generator and photometer, glove integrity tester, dispensing booth, laminar air flow hood purified cart trolley, laminar air flow cabinet , biosafety cabinet, static pass box, dynamic pass box, air shower etc have been sold to countries around the world from the establishment to the present.The company boasts a professional team comprising R&D specialists, design engineers, and seasoned technicians, supported by state-of-the-art testing equipment and precision manufacturing systems With lean management systems aligned with ISO standards, we deliver products that excel in both premium quality and exceptional cost-effectiveness.Guided by our core tenets of Customer-first Philosophy, Technological Leadership, Service Excellenceand Pioneering Innovation, we are dedicated to delivering integrity-driven partnerships for globallybenchmarked enterprises.


