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What is ISO in clean room?

  • Author:Jason Peng

  • Cleanroom Engineering Technology Manager of Deiiang Company.

    Product R&D Manager of GDC Inc. Cleanroom Equipment Manufacturing Company.

    Executive Director of Guangdong Cleanroom Industry Association of China.

    Engaged in R&D of related products for 15 years, with rich relevant technical experience

  • 2024-12-05  |  Visits:


What is ISO in Clean Room?

Importance of ISO Standards

The International Organization for Standardization (ISO) establishes crucial standards for clean rooms, which are vital in industries like pharmaceuticals and aerospace. These standards aim to minimize contamination in products and processes while ensuring required cleanliness levels.

Development and Impact of ISO Standards

ISO standards are created through expert consensus, enabling organizations to implement effective quality management systems. Notably, ISO 14644 classifies air cleanliness in clean rooms, guiding safe and efficient operations across various sectors.

ISO 9 Clean Room Manufacturer in China - Deiiang


iso 14644-1 Overview

ISO 14644-1 is a vital section of the ISO 14644 series that focuses specifically on the classification of air cleanliness in clean rooms and controlled environments. This standard establishes a framework for measuring and categorizing the concentration of airborne particles in clean rooms. According to ISO 14644-1, clean rooms are classified into different classes based on the permissible limits of particle concentrations, which vary depending on the specific applications and industry standards. The classification system is essential for maintaining the integrity and quality of products manufactured in these environments. 

ISO 14644-1 Standard ISO7 Modular Clean Room/ Modular Portable Clean Booth  - Cleanroom, Clean Room | Made-in-China.com


Clean Room Class

Clean rooms are classified into different classes based on the level of cleanliness they maintain. The classification is determined by the maximum allowable limits of airborne particulate contamination, which is expressed in terms of particles per cubic meter. The classes range from ISO1, which has the strictest cleanliness requirements, to ISO9, which allows for higher levels of contamination.  

ISO ClassMaximum Particles (≥0.1μm)Maximum Particles (≥0.5μm)Maximum Particles (≥5μm)
ISO11020
ISO2100240
ISO31,0002370
ISO410,0002,3700
ISO5100,00023,7000
ISO61,000,0002,370,0008
ISO710,000,00023,700,00029
ISO8100,000,000237,000,0003,000
ISO9No specific limitsNo specific limitsNo specific limits


Clean room design

  • Clean Room Design Considerations

Designing A Clean Room is essential for meeting cleanliness standards. It starts with choosing the right location and layout, focusing on airflow, temperature, and humidity to maintain optimal conditions and incorporating HEPA or ULPA filters for effective air filtration.

  • Material Selection and Maintenance

The choice of construction materials is crucial. Non-porous, smooth surfaces reduce dust accumulation and facilitate cleaning. The design should also allow easy maintenance access while ensuring a controlled flow of personnel and materials to prevent contamination.

  • Operational Protocols and Efficiency

Integrating operational protocols and standard operating procedures (SOPs) is vital. This includes gowning procedures, equipment decontamination, and personnel training, ensuring cleanliness and preventing contamination, ultimately improving product quality and industry compliance.

Preventative Cleanroom Maintenance | AES Clean Technology



Modular Clean Room

1. Advantages of Modular Design

The primary benefit of modular clean rooms lies in their design. Unlike traditional clean rooms that require extensive construction, modular clean rooms consist of pre-fabricated components that can be quickly assembled and disassembled. This modular approach allows for rapid deployment and reconfiguration, enabling businesses to adapt to changing production needs or regulatory requirements. 

2. Efficient Air Filtration Systems

One of the critical features of modular clean rooms is their advanced air filtration systems. These environments are equipped with high-efficiency particulate air (HEPA) or ultra-low penetration air (ULPA) filters that effectively remove airborne particles and contaminants. This ensures that the clean room meets specific cleanliness standards, such as ISO classifications. 

3. Cost-Effectiveness

Modular clean rooms also offer significant cost advantages over traditional clean room constructions. The prefabricated nature reduces construction time, allowing businesses to start operations sooner and generate revenue faster. 

4. Wide Range of Applications

The versatility of modular clean rooms allows them to be used across various sectors. They are ideal for pharmaceutical manufacturing, Semiconductor fabrication, biotechnology labs, and even food processing. Each application benefits from the clean room’s ability to control environmental factors, ensuring compliance with industry standards and enhancing product safety and quality.

Cleanroom HVAC - Heating, Ventilation, and Air Conditioning


American Cleanroom Systems

Company Overview

American Cleanroom Systems is a leader in the cleanroom industry, specializing in design, manufacture, and installation of tailored CleanRoom systems for sectors like pharmaceuticals, biotechnology, and Electronics, complying with international standards such as ISO 14644.

Commitment to Innovation

The company prioritizes innovation and quality, utilizing advanced technologies in its cleanroom solutions. Their modular designs allow customization and scalability, ensuring that systems not only meet cleanliness standards but also operate efficiently and effectively.

Comprehensive Services and Support

American Cleanroom Systems offers extensive services, including design, installation, and validation. Their expert team develops tailored solutions, conducts rigorous testing for compliance, and provides ongoing maintenance to ensure optimal cleanroom conditions and customer satisfaction.

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ACH Clean Room ISO Standards

  • Importance of ACH

ACH (Air Changes per Hour) is a vital metric in Cleanroom design and operation, indicating how often the air volume is replaced within an hour. This measurement is essential for maintaining air cleanliness, temperature, and humidity levels.

According to ISO standards, required ACH varies by cleanroom classification. Higher classes like ISO1 and 2 need more frequent air changes to minimize airborne particles, crucial for sensitive processes like semiconductor manufacturing and pharmaceutical production.

ISO 7 Cleanroom Standards | Particulate, ACH, Requirements

  • HVAC Design and Maintenance

Effective cleanroom HVAC design is key to achieving desired ACH, requiring careful airflow patterns and monitoring devices. Regular maintenance ensures compliance with ISO standards by checking filter efficiency and system performance, promoting cleanliness, safety, and improved product quality.

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