Overview
ISO 20857:2010 - Sterilization of health care products - Dry heat specifies requirements for the development, validation and routine control of a dry heat sterilization process for medical devices. The standard also provides requirements and guidance relevant to depyrogenation using dry heat. It describes the organizational, procedural and technical elements needed to demonstrate that a dry heat process achieves appropriate microbicidal activity and, where applicable, pyrogen reduction.
Key topics and requirements
ISO 20857:2010 covers both managerial and technical aspects of a dry heat sterilization programme, including:
- Quality management elements: documentation, management responsibility, product realization and control of nonconforming product (links to ISO 13485 / ISO 9001).
- Sterilizing agent characterization: microbicidal effectiveness, material compatibility and environmental considerations.
- Process and equipment characterization: defining process parameters and performance limits for ovens and chambers.
- Product definition: packaging, bioburden (microbiological quality), product families and biological safety requirements.
- Process definition: establishment of time/temperature profiles and process acceptance criteria.
- Validation framework: installation qualification (IQ), operational qualification (OQ) and performance qualification (PQ); review and approval of validation.
- Routine monitoring and control: process monitoring locations, routine testing and control actions for continued efficacy.
- Product release and maintenance: release criteria after sterilization/depyrogenation, equipment calibration, maintenance, requalification and change assessment.
- Informative annexes: guidance and accepted methods such as bioburden-based, biological-indicator/bioburden combined, and overkill approaches for process definition and development.
Note: the standard excludes requirements for inactivating agents of spongiform encephalopathies (e.g., CJD/BSE).
Applications and who uses it
ISO 20857 is intended for organizations responsible for sterilizing medical devices with dry heat, including:
- Medical device manufacturers designing terminal sterilization processes
- Contract sterilization service providers using dry heat ovens
- Quality, validation and regulatory affairs teams preparing validation protocols and routine control plans
- Hospital central sterilization/reprocessing units handling dry heat depyrogenation or sterilization
- Auditors and compliance specialists assessing sterilization programs against international best practice
Practical uses include developing validated dry heat cycles, documenting IQ/OQ/PQ, establishing routine monitoring and product release criteria, and integrating sterilization controls into a medical device quality management system.
Related standards
- ISO 13485 (medical device quality management)
- ISO 9001 (quality management systems)
- ISO 17664 (reprocessing of medical devices)
- EN 556-1 and ANSI/AAMI ST67 (sterility and SAL expectations)
Use ISO 20857:2010 when you need a structured, internationally recognized framework for safe, validated dry heat sterilization and depyrogenation of medical devices.