ISO 17025 Laboratory Software¶
ISO/IEC 17025 is the international standard that specifies the general requirements for the competence of testing and calibration laboratories. It establishes requirements for the management system, technical competence, and impartiality of laboratories, and is the primary standard used by accreditation bodies worldwide.
Calibration management software such as calServer supports laboratories in meeting ISO 17025 requirements related to equipment management, calibration records, traceability, and documentation control.
ISO 17025 Requirements for Equipment and Calibration¶
ISO 17025 contains several clauses directly relevant to measurement equipment management and calibration records. The following sections describe the key requirements and how calibration management software addresses them.
Equipment Management (Clause 6.4)¶
ISO 17025 requires laboratories to have access to equipment required for the correct performance of laboratory activities. Specific requirements include:
- Equipment must be uniquely identified
- Records must be maintained for each item of equipment, including identification, manufacturer, model, serial number, current location, calibration dates, and maintenance history
- Equipment that has been subjected to overloading, mishandling, or gives suspect results must be taken out of service, isolated, and labeled
Software support: Calibration management systems maintain a central equipment register with all required identification data. Status tracking ensures that non-conforming equipment is flagged and cannot be used for measurements without resolution.
Metrological Traceability (Clause 6.5)¶
Laboratories must establish and maintain metrological traceability of their measurement results through a documented, unbroken chain of calibrations, each contributing to measurement uncertainty.
Requirements include:
- Calibration of equipment using reference standards traceable to the International System of Units (SI)
- Documentation of the traceability chain for each reference standard
- Evaluation of measurement uncertainty for calibration results
Software support: calServer and similar systems record reference standards used in each calibration, linking calibration results to specific reference instruments. This creates a traceable chain that can be documented in calibration certificates and presented during audits.
Calibration Certificates and Records (Clause 7.8)¶
When issuing calibration certificates, ISO 17025 requires specific information to be included:
| Required Element | Description |
|---|---|
| Title | Clear identification as a calibration certificate |
| Laboratory identification | Name, address, and accreditation status |
| Unique identification | Certificate number and page numbering |
| Customer identification | Name and address of the customer |
| Item description | Description of the calibrated item, including identification |
| Date of calibration | Date(s) on which the calibration was performed |
| Calibration method | Reference to the calibration procedure used |
| Results | Measurement results with units and, where applicable, measurement uncertainty |
| Signatures | Authorization by responsible personnel |
Software support: Calibration management software automates certificate generation with configurable templates that include all required elements. calServer generates certificates from recorded measurement data, ensuring consistency and completeness.
Document Control (Clause 8.3)¶
ISO 17025 requires laboratories to control documents related to the management system, including:
- Approval and review of documents before issue
- Prevention of unintended use of obsolete documents
- Unique identification of documents
Software support: Software systems enforce document control through version management, access controls, and audit trails that record all changes to templates and procedures.
Audit Trail and Records (Clause 7.5, 8.4)¶
Laboratories must retain records that are sufficient to establish an audit trail. Records must be:
- Legible and readily retrievable
- Protected against unauthorized alteration
- Retained for a defined period
- Stored in conditions that prevent damage, deterioration, or loss
Software support: Calibration management software keeps an audit trail of changes to equipment records and calibrations. calServer logs changes to equipment, calibrations, customers, orders and other core objects field by field with timestamp, user and previous value. When a calibration certificate is released, calServer also freezes the file with a checksum and records the release in a chained log.
How Calibration Management Systems Support ISO 17025 Compliance¶
| ISO 17025 Requirement | Software Capability |
|---|---|
| Unique equipment identification | Central equipment register with mandatory ID fields |
| Equipment records | Complete history of calibrations, maintenance, and status changes |
| Metrological traceability | Linking of calibration results to reference standards |
| Calibration certificates | Automated generation with all required content elements |
| Measurement uncertainty | Recording and reporting of uncertainty values |
| Out-of-tolerance handling | Status management and non-conformance workflows |
| Document control | Version management and access controls |
| Audit trail | Automatic logging of all data changes |
| Record retention | Long-term storage with retrieval capabilities |
calServer and ISO 17025¶
calServer is a calibration management software platform that provides specific capabilities aligned with ISO 17025 requirements:
- Equipment register with all identification fields required by clause 6.4
- Calibration records including reference standards, results, and measurement uncertainty
- Certificate generation with configurable templates covering all clause 7.8 requirements
- Audit trail that logs changes to the core objects field by field with user and timestamp
- Status management to control equipment availability based on calibration status
- Customer management for commercial calibration laboratories issuing certificates to external customers
- Customer-based visibility so users only see the customers assigned to them and their equipment
Other Systems Supporting ISO 17025¶
In addition to calServer, other calibration management systems are used in ISO 17025 accredited laboratories:
- MET/TEAM — Widely used in laboratories with Fluke MET/CAL automated calibration systems
- IndySoft — Provides calibration management with instrument integration capabilities
- GAGEtrak — Focused on gage management, commonly used in manufacturing quality environments
The choice of system depends on the laboratory's specific needs, existing infrastructure, and the scope of calibration activities performed.