In today’s increasingly complex and specialized industries, maintaining a controlled environment is crucial. This is especially true in locations like Long Island and the Tri-State Area where we have thousands of labs within a dense population. Whether it’s pharmaceuticals, electronics manufacturing, or healthcare, controlling airborne particles, temperature, humidity, and other environmental parameters is essential for product quality and the safety of personnel. ISO 14644 plays a pivotal role in ensuring that these controlled environments meet stringent standards, and SEPS Services is at the forefront of helping organizations in New York and beyond adhere to these standards.

What is ISO 14644?

ISO 14644 comprises a set of international standards that outline the classification of air cleanliness within cleanrooms and controlled environments. These standards establish a standardized framework for evaluating and preserving the cleanliness of such environments, with a particular emphasis on airborne particles. The primary objective is to ensure consistency in cleanliness levels across various industries, ultimately facilitating global trade through harmonized cleanroom standards. SEPS Services recognizes the significance of ISO 14644 in this regard and has been a key player in helping organizations in New York adhere to these standards.

Why ISO 14644 Matters

  1. Product Quality Assurance: In industries like pharmaceuticals and electronics manufacturing, even tiny particles can have a significant impact on product quality. ISO 14644 helps maintain the required cleanliness levels to ensure the integrity of products.
  2. Personnel Safety: Cleanrooms are often used in environments where hazardous materials or processes are present. Therefore, maintaining the specified cleanliness levels protects workers from exposure to contaminants.
  3. Regulatory Compliance: Many industries in the Tri-State Area are subject to stringent regulatory requirements. ISO 14644 provides a framework that helps organizations meet these requirements, ensuring legal compliance.
  4. Global Consistency: ISO 14644 ensures that cleanroom classifications are consistent worldwide, making it easier for businesses here on Long Island and surrounding areas to collaborate and trade internationally.

Key Components of ISO 14644

ISO 14644 standards consist of several parts. Each addresses different aspects of cleanroom design, operation, and monitoring. Some of the key components include:

  1. Classification: ISO 14644-1 outlines the classification of air cleanliness in cleanrooms based on the maximum allowable particle concentration in the air.
  2. Monitoring: ISO 14644-2 provides guidelines for the monitoring of airborne particles in cleanrooms, including sampling methods and instrumentation.
  3. Design and Construction: ISO 14644-4 offers guidance on cleanroom design, construction, and start-up.
  4. Operations: ISO 14644-5 covers the operation of cleanrooms and controlled environments, including routine monitoring and documentation.

Applications Across Industries

ISO 14644 standards are applied across a wide range of industries here in New York, including:

  1. Pharmaceuticals: Cleanrooms are essential for pharmaceutical manufacturing to ensure product purity and prevent contamination.
  2. Electronics Manufacturing: Dust and particles can severely affect the performance of electronic components, making ISO 14644 crucial in this industry.
  3. Aerospace: Precision and cleanliness are vital in aerospace manufacturing, where components must function flawlessly in extreme conditions.
  4. Biotechnology: Research and production of biotechnological products demand controlled environments to prevent cross-contamination.
  5. Healthcare: Cleanrooms are used in hospitals and clinics for sterile compounding of medications and surgeries.


Cleanroom Testing and Certification per ISO 14644

Cleanrooms, as governed by ISO 14644 standards, must undergo rigorous testing and certification processes to ensure they meet the specified cleanliness levels. This phase is critical to guarantee that cleanrooms maintain the necessary environment for their intended applications, whether in pharmaceuticals, electronics, or any other industry. Here’s a closer look at the cleanroom testing and certification procedures based on ISO 14644:

1. Airborne Particle Count Testing:

  • Airborne particle count testing is a fundamental component of cleanroom certification. It assesses the concentration of airborne particles within the controlled environment.
  • ISO 14644-1 specifies the maximum allowable particle concentrations for each cleanroom classification. Testing is conducted using calibrated particle counters to measure particles of specific sizes.
  • The test results are compared against the ISO 14644-1 classification limits to determine if the cleanroom meets the required standards. Adjustments and remediation may be necessary if the limits are exceeded.

2. Airflow Velocity and Uniformity Testing:

  • ISO 14644-3 outlines guidelines for testing and measuring airflow velocity and uniformity within the cleanroom. This ensures that the air circulation effectively carries away particles and contaminants.
  • Testing involves measuring airflow velocity at specified points within the cleanroom and assessing the uniformity of air distribution.
  • Deviations from the prescribed standards may necessitate adjustments to the cleanroom’s HVAC (heating, ventilation, and air conditioning) system to achieve the desired airflow characteristics.

3. Air Pressure Differential Testing:

  • Cleanrooms often maintain positive or negative air pressure differentials relative to adjacent areas to prevent the ingress or egress of contaminants. ISO 14644-3 provides guidelines for testing these differentials.
  • Test procedures ensure that the cleanroom’s pressure differentials meet the design specifications. Failing to maintain the correct pressure differentials can compromise the cleanroom’s effectiveness.

4. Temperature and Humidity Testing:

  • ISO 14644-3 also addresses temperature and humidity testing, depending on the specific requirements of the controlled environment.
  • These tests ensure that the cleanroom maintains temperature and humidity levels within the specified range to meet the needs of its intended applications. Variations from these parameters can impact product quality and personnel comfort.

5. Lighting and Noise Levels Testing:

  • ISO 14644-3 includes provisions for assessing lighting and noise levels in cleanrooms, which can be crucial in certain applications.
  • Proper lighting levels and minimal noise are essential for worker comfort and safety. Testing ensures compliance with these aspects.

6. Cleanroom Documentation:

  • Proper documentation of all testing procedures, results, and any corrective actions taken is a crucial component of cleanroom certification.
  • These records serve as evidence of compliance with ISO 14644 standards and regulatory requirements. They are invaluable for audits and ongoing monitoring of cleanroom performance.

7. Periodic Recertification:

  • Cleanroom testing and certification are not one-time events. Regular recertification is essential to ensure that the controlled environment continues to meet ISO 14644 standards.
  • Recertification intervals may vary based on factors like industry regulations, cleanroom usage, and historical performance. It is crucial to establish a robust schedule for periodic recertification to maintain cleanroom integrity.

In summary, cleanroom testing and certification, as per ISO 14644 standards, involve a comprehensive assessment of various parameters to ensure the controlled environment consistently meets specified cleanliness levels and operational requirements. These procedures are essential for product quality, personnel safety, and regulatory compliance in industries where controlled environments are paramount.


ISO 14644 standards are the backbone of industries that we serve in New York, New Jersey and Connecticut that require controlled environments. It maintains product quality, personnel safety, and regulatory compliance. Additionally, these standards continue to evolve to meet the changing needs of modern industries. Organizations that embrace these standards benefit from enhanced product quality, safety, and global compatibility. Whether you work in pharmaceuticals, electronics, or any other industry requiring controlled environments, understanding and adhering to ISO 14644 standards is essential for success.

Unidentified microbiologist is open the cleanroom door to enter the room in clean area of microbial laboratory in pharmaceutical factory, concept of science, healthcare and safety operation.