ISO 21910-1:2020 PDF

Name: ISO 21910-1:2020 — Fine bubble technology — Characterization of microbubbles — Part 1: Off-line evaluation of size index
SKU: ISO 21910-1:2020
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Fine bubble technology — Characterization of microbubbles — Part 1: Off-line evaluation of size index

Название (английский):

ISO 21910-1:2020

Fine bubble technology — Characterization of microbubbles — Part 1: Off-line evaluation of size index

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 22
Дата публикации:: 30 января 2020 г.
Издание:: ISO IS 21910 edition 1 version 1
ICS:: 07.030

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Описание (английский):

This document specifies the evaluation method for the size index of microbubbles in microbubble dispersion. It is only applicable to microbubbles with or without shell in water within the range from 1 μm to 100 μm. It describes the sampling methods from the point generating or dispersing microbubbles in the retention container to the detecting point of the measuring instruments.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview - ISO 21910-1:2020 (Fine bubble technology, Part 1)

ISO 21910-1:2020 specifies an off-line evaluation method for the size index of microbubbles in water. It applies to microbubbles with or without a shell within the size range 1 μm to 100 μm and defines sampling, sample transfer, retention and detection practices to produce comparable size-index results in a laboratory environment. The standard targets traceable, repeatable characterization of microbubble dispersions used across fine bubble technology applications.

Key technical topics and requirements

Scope and applicability

Applicable to microbubbles (gas-filled) in water, 1–100 μm; includes coated (shell) and uncoated microbubbles.

Sampling and sample transfer

Specifies sampling from the point of generation or dispersion in a retention container through the loading tube to the measuring instrument.
Requirements to avoid bubble loss or adhesion in transfer lines and to control loading tube geometry, material and surface finish.

Retention time and measurement time

Defines “retention time” (generation → detector) and “measurement time” (stable measurement period). Emphasizes prompt measurement for larger bubbles (≥ 10 μm).

Sample requirements

Use of clean water diluent or blank water to control ultrafine bubble background; rinsing procedures before measurements.

Measurement system and instruments

Guidance on arrangement of components, pump/flow-rate considerations, and proximity of measuring instrument to generation source for unstable dispersions.

Data, calibration and uncertainty

Prescribes number of measurements, size categories, result reporting, calibration/traceability and uncertainty evaluation.

Informative annexes

Examples include dynamic image analysis (Annex A), effects of setup (Annex B), blank subtraction (Annex C), repeatability (Annex D) and inter-technique comparisons (Annex E).

Practical applications and users

ISO 21910-1 is intended for:

Analytical laboratories performing microbubble characterization and quality control.

Manufacturers of fine-bubble generators and microbubble measurement instruments.

R&D teams in sectors using microbubbles: water treatment, aquaculture, agriculture, cleaning, and biomedical (e.g., contrast agents).

Companies or testing bodies seeking inter-laboratory comparability and standardized reporting of microbubble size indices.

Practical uses include product development, process validation, performance benchmarking, and regulatory or procurement specifications where consistent microbubble sizing is needed.

Related standards and references

ISO 21910 series (other parts cover additional characterization aspects)

ISO 20480-2 (classification reference for microbubble behavior)

ISO 20298-1 and ISO 13320 (terminology and measurement concepts referenced)

Keywords: ISO 21910-1, fine bubble technology, microbubble characterization, size index, off-line evaluation, sampling methods, retention time, measurement instruments.

ISO 21910-1:2020 PDF

Abstract

Похожие стандарты

Overview - ISO 21910-1:2020 (Fine bubble technology, Part 1)

Key technical topics and requirements

Practical applications and users

Related standards and references

Технические детали

BS ISO 21910-2:2025

Fine bubble technology. Characterization of microbubbles - In-situ dynamic image analysis method

BS ISO 20480-2:2018

Fine bubble technology. General principles for usage and measurement of fine bubbles. Categorization of the a…

BS ISO 20298-1:2018

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

ISO 13320-1:1999

Particle size analysis — Laser diffraction methods — Part 1: General principles