Overview
ISO/TR 23015:2020 - Fine bubble technology - Measurement technique matrix for the characterization of fine bubbles is a Technical Report that compiles and compares commonly used preparation and characterization techniques for fine bubbles. The document summarizes what each method measures (size, size distribution, concentration, zeta/charge, measurement time), lists reference standards where available, and outlines the merits and limitations of each technique to support consistent interpretation of results.
Key topics
- Measurement technique matrix covering methods such as:
- Dynamic light scattering (DLS)
- Zeta-potential / electrophoretic mobility
- Particle tracking analysis (PTA)
- Laser diffraction
- Resonant mass measurement
- Electrical sensing zone (Coulter-type)
- Ultrasonic attenuation spectroscopy
- Single-particle light interaction methods
- Static and dynamic image analysis
- Static multiple light scattering (SMLS)
- Characterization parameters documented for each method:
- Size and size distribution
- Concentration (number/volume)
- Charge / zeta potential
- Measurement time and practical throughput
- Reference standards and traceability notes
- Comparative guidance on reconciling different size and concentration indices reported by different instruments and techniques.
- Definitions, abbreviations and bibliographic references curated by ISO/TC 281 (Fine bubble technology).
Practical applications
ISO/TR 23015:2020 is intended to guide selection and interpretation of measurement methods for fine bubbles in research, development and operational contexts. Typical practical uses include:
- Selecting appropriate instrumentation for bubble sizing and concentration analysis
- Designing test protocols and sample preparation workflows
- Comparing data from different labs or instruments and understanding method-driven discrepancies
- Informing quality control, method validation and R&D in technologies that depend on fine bubbles
Who should use this document
- Laboratory scientists and researchers working on fine bubble generation and behavior
- Instrument manufacturers and calibration laboratories
- Process and environmental engineers in water/wastewater treatment, flotation, aquaculture, chemical processing and related fields
- Standards developers and testing laboratories seeking harmonized interpretation of measurements
Related standards
- This Technical Report complements ISO work on measurement and characterization methods. Users should consult specific reference standards cited within the TR (instrument-specific or particle-measurement standards) for normative test procedures and calibration requirements.
Keywords: ISO/TR 23015:2020, fine bubble technology, measurement technique matrix, bubble size distribution, bubble concentration, dynamic light scattering, particle tracking analysis, zeta potential.
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