Resources
Tools, Guidance, and Standards-Based Resources to Support Cleanroom Decisions
Cleanroom design and compliance decisions are governed by established regulatory standards, including USP <797>, USP <800>, and ISO 14644.
This Resource Center translates those standards into practical, real-world guidance to help healthcare teams make safer, more informed decisions about cleanroom design, operations, and compliance.
Understand the Standards That Define Cleanroom Performance
Cleanroom requirements are defined by recognized regulatory and international standards. These resources help interpret them in practical terms.
Cleanroom Design & Planning Resources
Evidence-Based Cleanroom Planning Principles
These guidelines are based on industry engineering practices, ISO 14644 guidance, and USP cleanroom requirements.
Cleanroom Design Decision Guide
Key Design Considerations
1. Airflow Design
- Laminar airflow is preferred in critical ISO 5 areas
- Air must flow from clean to less clean areas
- Pressure cascades must prevent contamination backflow
2. Room Classification Strategy
- ISO 7 typically used for buffer rooms
- ISO 8 used for ante rooms or support spaces
- Classification must match intended drug preparation risk
3. Material Selection
- Surfaces must be non-porous, cleanable, and durable
- Joints and seams must minimize particle accumulation
4. Workflow Integration
- Staff movement should minimize cross-contamination risk
- Material transfer paths must support unidirectional flow
Total Cost of Ownership (TCO) Overview
TCO includes:
- Initial construction cost
- Validation and certification costs
- Maintenance and filter replacement
- Downtime during remediation
- Risk cost of failed inspections
What This Helps You Do
- Avoid underestimating lifecycle cost
- Improve capital approval justification
- Reduce long-term operational risk
FAQ Library
USP is a regulatory standard that defines requirements for sterile compounding in healthcare settings. It establishes environmental controls, personnel practices, and quality assurance procedures to ensure sterile medications are prepared safely.
USP governs the safe handling of hazardous drugs. It focuses on protecting healthcare workers through engineering controls, containment systems, and safe handling procedures.
ISO 14644 is an international standard that defines cleanroom classification based on airborne particle concentration. It determines how “clean” a controlled environment must be for specific applications.
Most failures occur due to operational drift rather than design issues. Common causes include airflow imbalance, inadequate maintenance, inconsistent cleaning practices, or missing documentation.
A HEPA filter removes at least 99.97% of airborne particles 0.3 microns in size. It is a critical component in maintaining cleanroom air quality.
Differential pressure ensures air flows from cleaner to less clean spaces, preventing contamination from entering sterile environments.
Environmental monitoring is the process of regularly measuring air quality, particles, and microbial contamination to ensure ongoing compliance.
Most cleanrooms require annual certification, though higher-risk environments may require more frequent testing depending on regulatory or institutional requirements.
The biggest risk is designing for certification only, rather than long-term operational performance. Cleanrooms must be built for real-world use conditions.
Glossary
| Term | Definition |
| ISO 14644 | International standard that defines cleanroom classification based on airborne particle levels. |
| USP <797> | Standard for sterile compounding in healthcare environments. |
| USP <800> | Standard for hazardous drug handling and exposure prevention. |
| HEPA Filtration | High-efficiency filtration system removing 99.97% of particles ≥0.3 microns. |
| ULPA Filtration | Ultra-low penetration filtration used in high-control environments requiring stricter particle limits. |
| Air Changes per Hour (ACH) | Number of times air is replaced in a room each hour, critical for contamination control. |
| Differential Pressure | Pressure difference between adjacent rooms used to control airflow direction. |
| Cleanroom Certification | Formal testing process verifying compliance with ISO or USP requirements. |
| Validation | Documented proof that a cleanroom performs as intended under real operating conditions. |
| C-PEC (Containment Primary Engineering Control) | Device used for safe handling of hazardous drugs, such as biological safety cabinets. |
| TCO (Total Cost of Ownership) | Full lifecycle cost of a cleanroom including construction, maintenance, downtime, and remediation. |
Better Decisions Start With Better Information
Cleanroom compliance is not achieved once. It is maintained over time through design, operation, and ongoing oversight.
QleanAir provides the expertise, tools, and guidance to help healthcare organizations reduce risk and maintain performance throughout the cleanroom lifecycle.