Cleanroom Validation & IQ OQ PQ Qualifications Complete Guide


Cleanroom commissioning and qualification are critical processes that ensure the integrity and functionality of controlled environments. These processes involve thorough planning, testing, and documentation to verify that a cleanroom meets the required standards and regulations.

This article explores the definition, importance, and key components of cleanroom commissioning and qualification. It also delves into the commissioning process, qualification parameters, documentation requirements, challenges, and considerations.

By understanding these aspects, organizations can ensure the optimal performance and reliability of their cleanroom facilities.

Importance of Cleanroom Commissioning and Qualification: Essential for several reasons:

  1. Compliance: Commissioning and qualification ensure compliance with regulatory requirements, industry standards, and guidelines, such as ISO, GMP, and IEC.
  2. Risk Mitigation: Thorough testing and verification processes help identify and mitigate potential risks that could compromise the cleanroom’s integrity and performance.
  3. Quality Assurance: Commissioning and qualification processes guarantee the quality, reliability, and consistency of the cleanroom, reducing the likelihood of contamination and product defects.
  4. Operational Efficiency: By validating the cleanroom’s performance, commissioning and qualification contribute to improved operational efficiency, optimized workflows, and enhanced productivity.

Cleanroom Basics: 

Cleanrooms are controlled environments designed to minimize the presence of airborne particles, contaminants, and other variables that could affect sensitive processes or products. They are utilized in industries such as pharmaceuticals, biotechnology, electronics, healthcare, and research laboratories.

Classification of Cleanrooms: Cleanrooms are classified based on their particulate cleanliness levels. Classification systems, such as ISO 14644-1, categorize cleanrooms into different classes, ranging from ISO Class 1 (highest cleanliness) to ISO Class 9 (lowest cleanliness).

ISO 14644 Cleanroom Classes Classification

Key Components of a Cleanroom: Cleanrooms consist of several key components, including air filtration systems, HVAC (heating, ventilation, and air conditioning) systems, controlled access points, growing areas, and monitoring and control systems.

Cleanroom Standards and Regulations: Cleanrooms adhere to various standards and regulations depending on the industry and application. Common standards include ISO 14644 for cleanliness, GMP guidelines for pharmaceutical and healthcare industries, and IEC standards for electronics and semiconductor industries.

Cleanroom Commissioning Process


Cleanroom Commissioning Process
Image Source:
  1. Project Planning and Documentation: This involves defining project objectives, scope, and requirements, as well as preparing detailed plans, specifications, and protocols for commissioning and qualification.
  2. Design Review: A comprehensive review of the cleanroom design ensures that it aligns with the intended purpose and meets regulatory and industry standards.
  3. Factory Acceptance Testing (FAT): FAT involves inspecting and testing cleanroom components and equipment at the manufacturer’s site to ensure they meet the specified requirements.

Installation Qualification (IQ):


installation qualification and operational qualification
                                                                          Image Source: cytivalifesciences


Installation qualification(IQ) refers to the process of verifying that an instrument or item of equipment has been delivered, installed and configured in accordance with a manufacturer’s standard or an approved installation checklist.

Equipment Installation Verification: This step verifies that all cleanroom equipment, instruments, and systems are installed correctly and in accordance with the design specifications.

Documentation Review: The review of installation records, equipment manuals, and other relevant documents ensures proper documentation of the installation process.

Operational Qualification (OQ):

Operational Qualification for Cleanrooms
Image Source: pharmaspecs

In OQ, the purpose is to ensure equipment performance matches the user requirements specification within the operating ranges specified by the manufacturer. It involves identifying and inspecting equipment features that can have an impact on the quality of the final product.

Performance Testing: OQ involves performance testing of cleanroom equipment, HVAC systems, filtration systems, and other critical components to ensure they meet the specified performance criteria.

Risk Assessment: A risk assessment helps identify potential vulnerabilities and risks associated with cleanroom operations, allowing for the implementation of appropriate mitigation measures.

Performance Qualification (PQ):

The Performance Qualification is a validation protocol that demonstrates that equipment or systems can perform or control processes in accordance with written and pre-approved specifications while operating in the environment specified for them.

Validation Testing: PQ involves conducting extensive testing to validate the cleanroom’s performance under normal operating conditions, including particle counts, air change rates, temperature and humidity control, and pressure differentials.

Data Analysis and Reporting: The collected data is analyzed and compared against the predefined acceptance criteria. A comprehensive report is generated to document the qualification process, results, and any deviations or non-conformities.

Cleanroom Qualification

Qualification of cleanrooms is defined as “the process of evaluating a classified cleanroom’s level of compliance with its intended use.” Thus, qualification involves classification.

Airflow and Air Change Rates: Proper airflow patterns and sufficient air change rates are essential for controlling particle levels and maintaining the cleanliness of a cleanroom. Qualification ensures that the airflow systems meet the specified requirements and maintain the desired particle counts within the cleanroom.

Temperature and Humidity Control: Qualification verifies the effectiveness of the cleanroom’s HVAC systems in maintaining precise temperature and humidity levels within the specified range to meet the operational requirements.

Particle Monitoring and Control: Qualification involves the evaluation of particle monitoring systems and procedures to ensure accurate and reliable measurement of airborne particle concentrations. It also assesses the effectiveness of cleanroom practices and protocols for minimizing particle generation and contamination.

Cleanroom Pressurization: Pressurization plays a crucial role in preventing the ingress of contaminants into the cleanroom. Qualification verifies the positive or negative pressure differentials between adjacent areas, ensuring that the desired pressure relationships are maintained.

Contamination Control Measures: Qualification assesses the effectiveness of contamination control measures such as gowning procedures, equipment sanitization, material transfer protocols, and cleaning and disinfection processes to minimize the risk of contamination within the cleanroom.

Documentation and Reporting: A. Validation Plan and Protocol Development: A well-defined validation plan and protocols outline the approach, methods, acceptance criteria, and test procedures to be followed during the cleanroom commissioning and qualification process.

Data Collection and Analysis: Accurate and comprehensive data collection during testing and qualification is crucial. Data analysis helps determine compliance with specified requirements and identifies areas that may require corrective actions.

Non-Conformance and Deviation Handling: Any non-conformance or deviation observed during commissioning and qualification should be documented, investigated, and addressed through appropriate corrective and preventive actions.

Final Qualification Report: A final qualification report summarizes the entire commissioning and qualification process, including the objectives, activities, test results, deviations, and corrective actions taken. It serves as a reference for ongoing maintenance, compliance, and future audits.

Challenges and Considerations:

Common Challenges in Cleanroom Commissioning and Qualification: Common challenges include design flaws, inadequate project planning, equipment malfunction, non-compliance with regulations, lack of qualified personnel, and unforeseen technical issues. These challenges can impact the efficiency and effectiveness of the commissioning and qualification process, necessitating careful planning and mitigation strategies.


Cleanroom commissioning and qualification are vital processes for ensuring the reliability, compliance, and performance of controlled environments. By following established protocols, adhering to standards and regulations, and addressing potential challenges, organizations can achieve cleanroom facilities that meet stringent requirements and support their critical operations.

Further Reading

What’s The Difference Between cGMP and GMP?
FDA medical device registration process
Technical Writer for Quality Management System

by admin

I am a seasoned GxP expert and the founder and CEO of GxP Cellators, a consulting firm that provides GxP advisory and auditing services to clients across the globe. My mission is to help clients achieve excellence in quality, compliance, and remediation, and to foster a robust quality culture in their organizations.

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