Overview
EN ISO 8655-1:2022 (Piston-operated volumetric apparatus - Part 1) defines terminology, general requirements and user recommendations for piston-operated volumetric apparatus (POVA). Applicable equipment includes pipettes, burettes, dilutors, dispensers and manually operated precision laboratory syringes. The standard sets the framework for safe, accurate volumetric liquid handling in laboratories and is not intended for medical products designed for use on humans (e.g., medical syringes).
Key topics and requirements
- Terminology and abbreviated terms - establishes consistent definitions used across the ISO 8655 series to avoid ambiguity in calibration and testing.
- Types of POVA - classification and descriptions for pipettes, burettes, dilutors, dispensers and manual precision syringes.
- General metrological requirements - provisions on calibration frequency, reporting of measurement errors, metrological confirmation, and criteria for pass/fail decisions (clauses summarized at a system level rather than prescriptive intervals).
- Exchangeable parts and maintenance - guidance on managing replaceable components, routine testing, maintenance and repair to preserve performance.
- User information and product marking - manufacturer information that should accompany instruments, including decontamination/sterilisation and chemical resistance guidance.
- Factors affecting selection and use - guidance on liquid interactions, and considerations for air displacement pipettes and other working principles.
- Reference measurement methods (related parts) - links to gravimetric (Part 6), photometric (Part 8), and alternative procedures (Part 7) for volume determination.
Practical applications and users
This standard is intended for:
- Manufacturers - to define design, testing and information requirements and to support product declarations.
- Calibration laboratories and test houses - as a basis for independent calibration, verification and routine testing procedures.
- Laboratory managers and users - to select appropriate POVA, set calibration intervals, interpret measurement errors and perform routine maintenance.
- Quality and compliance personnel - to establish traceable volumetric workflows and meet accreditation or regulatory expectations.
Practically, EN ISO 8655-1:2022 helps ensure accurate liquid handling in analytical chemistry, clinical laboratories (non-medical devices), pharmaceutical R&D, environmental testing and QA/QC processes.
Related standards
Part 1 is the introductory/general part of the ISO 8655 series. Relevant companion parts include:
Use EN ISO 8655-1:2022 together with the specific part for your device to implement robust calibration, testing and user-recommendation practices for piston-operated volumetric apparatus.
