ISO 20298-1:2018 PDF

Name: ISO 20298-1:2018 — Fine bubble technology — Sampling and sample preparation for measurement — Part 1: Ultrafine bubble dispersion in water
SKU: ISO 20298-1:2018
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Fine bubble technology — Sampling and sample preparation for measurement — Part 1: Ultrafine bubble dispersion in water

Название (английский):

ISO 20298-1:2018

Fine bubble technology — Sampling and sample preparation for measurement — Part 1: Ultrafine bubble dispersion in water

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 13 ноября 2018 г.
Издание:: ISO IS 20298 edition 1 version 1
ICS:: 07.030

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Описание (английский):

This document specifies procedures and requirements for sampling and sample preparation of ultrafine bubble dispersions in water. This document is applicable to relatively stable dispersions where the size and number of bubbles are relatively constant for the duration of the sampling, sample preparation and measurement. This document is not applicable to less stable fine bubble dispersions or microbubble dispersions.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 20298-1:2018 - Fine bubble technology - Sampling and sample preparation for measurement - Part 1: Ultrafine bubble dispersion in water specifies standardized procedures for sampling, sample preparation, and record keeping for ultrafine bubble dispersions (UFBD) in water. The standard targets relatively stable ultrafine bubble systems where bubble size and number concentration remain essentially constant during sampling, preparation and measurement. It excludes less-stable fine bubble and microbubble dispersions.

Key topics and requirements

Scope and applicability: Applies only to stable ultrafine bubble dispersion in water; not for microbubble dispersions.

Terms and definitions: Defines UFBD, fine bubble dispersion (FBD), microbubble dispersion (MBD), and water diluent (blank/known UF bubble concentration).

Apparatus and cleaning:

Required equipment: tank, closed sample container, pipette, motor-driven stirrer (≈50–200 rpm), motor-driven drum roller (≈10–20 rpm).
Cleaning: rinse tank with water diluent; rinse container, pipette and stirrer with UFBD or water diluent.

Sampling procedure:

Static (tank) sampling only - not for flowing samples.
Use pipette to transfer slowly; flow sample down the inside wall; do not add the last pipette drop (avoid introducing large bubbles).
Consider aspirating speed influence on UFBD characteristics to estimate measurement uncertainty.

Sample preparation:

Establish homogeneity in containers before measurement (Annex A). Avoid over-stirring; stirring >200 rpm can affect number concentration.
Dilution using water diluent when UFBD concentration exceeds instrument dynamic range. Use calibrated balances or volumetric glassware and homogenize diluted samples (Annex B provides an example dilution and calibration procedure using linear regression to extrapolate original number concentration).

Records: Must document sample identity and chemistry, sampling site/environment/date/procedure/operator, and sample preparation site/environment/date/procedure/operator.

Applications and users

ISO 20298-1 is practical for laboratories, QC teams, instrument manufacturers, researchers and process engineers working in:

Fine bubble technology R&D

Aquaculture, agriculture, cleaning and water treatment applications where ultrafine bubbles improve performance

Metrology labs validating measurement methods for bubble size, bubble number concentration, and stability Users benefit from reproducible sampling, minimized artefacts, and traceable records that improve measurement confidence.

Related standards

ISO 20480-1 - Fine bubble technology - General principles / terminology

ISO 21255 - Storage and transportation of ultrafine bubble dispersion in water

ISO 123 - Sampling (referenced for homogenization methods)

ISO/IEC Guide 98-1 - Uncertainty of measurement

Keywords: ISO 20298-1, ultrafine bubble, fine bubble technology, sampling, sample preparation, UFBD dilution, homogeneity, water diluent, measurement.

ISO 20298-1:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

BS ISO 20298-1:2018

Fine bubble technology. Sampling and sample preparation for measurement. Ultrafine bubble dispersion in water.

ISO 20480-1:2017/Amd 1:2024

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ISO 21255:2018

Fine bubble technology — Storage and transportation of ultrafine bubble dispersion in water

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