ISO 21255:2018
(Main)Fine bubble technology — Storage and transportation of ultrafine bubble dispersion in water
Fine bubble technology — Storage and transportation of ultrafine bubble dispersion in water
This document describes the procedures and equipment for storage and transportation of ultrafine bubble dispersions in water and specifies the related requirements in order to maintain such bubble characteristics as size and number concentration.
Technologie des fines bulles — Conservation et transport d'ultrafines bulles en dispersion dans l'eau
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INTERNATIONAL ISO
STANDARD 21255
First edition
2018-11
Fine bubble technology — Storage
and transportation of ultrafine bubble
dispersion in water
Technologie des fines bulles — Conservation et transport d'ultrafines
bulles en dispersion dans l'eau
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Substance for storage and transportation . 1
5 Container and filling . 2
6 Storage . 3
7 Transportation . 3
8 Records . 3
Bibliography . 5
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 281, Fine bubble technology.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved
Introduction
Fine bubble technology applications have grown steadily in recent years. They now embrace a diverse
range of industrial activities from enhancing the growth rates of plants in agriculture to the separation
peel-off of solar panel silicon wafers in semiconductor manufacturing process.
Improved advanced cleaning purification of waste water and enhanced high throughput removal of
lubricant oil on machined works and of salt stains from a surface of traffic infrastructures, have also
been demonstrated.
Most of these applications are currently limited to the site where the generating system of fine bubble
water is installed close to the application objects and operated simultaneously to the application.
Expansion for applications where the site of bubble application is different from that of generation is
being implemented by some innovative industries, but there are currently no concrete guidelines for
storage and transportation of fine bubble water, as typical ultrafine bubbles (UFB) are known to have
high stability once generated. The purpose of this document is to expand the scope of application of
initial measurements of fine bubble quality downstream in the supply chain.
This document specifies the requirements related to the planning, equipment and operation process
necessary to store and transport ultrafine bubble dispersions without significant deterioration in terms
of number concentration index. This document is intended to help assessing the acceptable conditions
and periods for storage and transportation that guarantee integrity of ultrafine bubble quality.
INTERNATIONAL STANDARD ISO 21255:2018(E)
Fine bubble technology — Storage and transportation of
ultrafine bubble dispersion in water
1 Scope
This document describes the procedures and equipment for storage and transportation of ultrafine
bubble dispersions in water and specifies the related requirements in order to maintain such bubble
characteristics as size and number concentration.
2 Normative
...
INTERNATIONAL ISO
STANDARD 21255
First edition
2018-11
Fine bubble technology — Storage
and transportation of ultrafine bubble
dispersion in water
Technologie des fines bulles — Conservation et transport d'ultrafines
bulles en dispersion dans l'eau
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Substance for storage and transportation . 1
5 Container and filling . 2
6 Storage . 3
7 Transportation . 3
8 Records . 3
Bibliography . 5
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 281, Fine bubble technology.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved
Introduction
Fine bubble technology applications have grown steadily in recent years. They now embrace a diverse
range of industrial activities from enhancing the growth rates of plants in agriculture to the separation
peel-off of solar panel silicon wafers in semiconductor manufacturing process.
Improved advanced cleaning purification of waste water and enhanced high throughput removal of
lubricant oil on machined works and of salt stains from a surface of traffic infrastructures, have also
been demonstrated.
Most of these applications are currently limited to the site where the generating system of fine bubble
water is installed close to the application objects and operated simultaneously to the application.
Expansion for applications where the site of bubble application is different from that of generation is
being implemented by some innovative industries, but there are currently no concrete guidelines for
storage and transportation of fine bubble water, as typical ultrafine bubbles (UFB) are known to have
high stability once generated. The purpose of this document is to expand the scope of application of
initial measurements of fine bubble quality downstream in the supply chain.
This document specifies the requirements related to the planning, equipment and operation process
necessary to store and transport ultrafine bubble dispersions without significant deterioration in terms
of number concentration index. This document is intended to help assessing the acceptable conditions
and periods for storage and transportation that guarantee integrity of ultrafine bubble quality.
INTERNATIONAL STANDARD ISO 21255:2018(E)
Fine bubble technology — Storage and transportation of
ultrafine bubble dispersion in water
1 Scope
This document describes the procedures and equipment for storage and transportation of ultrafine
bubble dispersions in water and specifies the related requirements in order to maintain such bubble
characteristics as size and number concentration.
2 Normative
...
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