ISO 7428-1:2024
(Main)Fine bubble technology — Domestic applications — Part 1: Assessment of showerhead devices by evaluating size and concentration indices of generated fine bubbles
Fine bubble technology — Domestic applications — Part 1: Assessment of showerhead devices by evaluating size and concentration indices of generated fine bubbles
This document specifies the evaluation method for size and concentration indices of fine bubbles generated from the fine bubble showerhead device. It is only applicable to fine bubble dispersion in water generated from fine bubble showerhead devices using air. It describes the sampling method for fine bubble dispersion in water from the fine bubble showerhead devices into the retention container and the measurement procedure of size and concentration indices. NOTE The discharging drive force for fine bubble showerhead devices is applied using a pump or water pressure. Therefore, the test of the subject device is performed under environmental conditions including such a practical environment.
Technologie des fines bulles — Applications domestiques — Partie 1: Évaluation des dispositifs avec pommes de douche par évaluation des indices de concentration et de la taille des fines bulles générées
General Information
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Standards Content (Sample)
International
Standard
ISO 7428-1
First edition
Fine bubble technology — Domestic
2024-05
applications —
Part 1:
Assessment of showerhead
devices by evaluating size and
concentration indices of generated
fine bubbles
Technologie des fines bulles — Applications domestiques —
Partie 1: Évaluation des dispositifs avec pommes de douche par
évaluation des indices de concentration et de la taille des fines
bulles générées
Reference number
ISO 7428-1:2024(en) © ISO 2024
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ISO 7428-1:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2024 – All rights reserved
ii
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ISO 7428-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Sample .2
4.2 Measuring instruments .2
5 Environment . 2
6 Evaluation . 2
6.1 General .2
6.2 Setting of fine bubble showerhead device to retention container .3
6.3 One-way flow .4
6.3.1 General .4
6.3.2 System configuration .4
6.3.3 Evaluation procedure for the one-way flow .5
6.4 Circulation flow .
...
FINAL DRAFT
International
Standard
ISO/FDIS 7428-1
ISO/TC 281
Fine bubble technology — Domestic
Secretariat: JISC
applications —
Voting begins on:
2024-03-04
Part 1:
Assessment of showerhead
Voting terminates on:
2024-04-29
devices by evaluating size and
concentration indices of generated
fine bubbles
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 7428-1:2024(en) © ISO 2024
---------------------- Page: 1 ----------------------
FINAL DRAFT
ISO/FDIS 7428-1:2024(en)
International
Standard
ISO/FDIS 7428-1
ISO/TC 281
Fine bubble technology — Domestic
Secretariat: JISC
applications —
Voting begins on:
Part 1:
Assessment of showerhead
Voting terminates on:
devices by evaluating size and
concentration indices of generated
fine bubbles
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
COPYRIGHT PROTECTED DOCUMENT
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 7428-1:2024(en) © ISO 2024
© ISO 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO/FDIS 7428-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Sample .2
4.2 Measuring instruments .2
5 Environment . 2
6 Evaluation . 2
6.1 General .
...
ISO/DIS FDIS 7428-1:2023(E)
ISO /TC 281/WG3
Secretariat: JISC
Date: 2023-10-012024-02-19
Fine bubble technology — Domestic applicationapplications —
Part 1:
Assessment of showerhead devices by evaluating size and
concentration indices of generated fine bubbles
FDIS stage
---------------------- Page: 1 ----------------------
ISO/DIS FDIS 7428-1:2023(E2024(en)
© ISO 20232024
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
E-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
© ISO 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO/DIS FDIS 7428-1:2023(E2024(en)
© ISO 2023 – All rights reserved iii
© ISO 2024 – All rights reserved
iii
---------------------- Page: 3 ----------------------
ISO/DIS FDIS 7428-1:2023(E2024(en)
Contents
Foreword . vi
Introduction .vi i
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Sample . 2
4.2 Measuring instruments . 2
5 Environment . 2
6 Evaluation . 3
6.1 General . 3
6.2 Setting of fine bubble showerhead device to retention container . 3
6.3 One-way flow . 5
6.3.1 General . 5
6.3.2 System configuration . 5
6.3.3 Evaluation procedure for the one-way flow . 6
6.4 Circulation flow . 7
6.4.1 General . 7
6.4.2 System configuration .
...
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