ISO 7429-1:2024
(Main)Fine bubble technology — Industrial and consumer device applications — Part 1: Assessment of water pressure driven nozzles by evaluating size and concentration indices of generated fine bubbles
Fine bubble technology — Industrial and consumer device applications — Part 1: Assessment of water pressure driven nozzles by evaluating size and concentration indices of generated fine bubbles
This document specifies the evaluation methods for size and concentration indices of fine bubbles (FBs) generated through a nozzle. It only applies to FB dispersions (FBDs) in water generated through the nozzle. It describes the sampling method for a FBD from the nozzle into the retention container and the measurements of size and concentration indices. Major applications of the equipment include components of various industrial water systems and consumer baths and kitchens.
Titre manque — Partie 1: Titre manque
General Information
Buy Standard
Standards Content (Sample)
International
Standard
ISO 7429-1
First edition
Fine bubble technology —
2024-04
Industrial and consumer device
applications —
Part 1:
Assessment of water pressure
driven nozzles by evaluating size
and concentration indices of
generated fine bubbles
Reference number
ISO 7429-1:2024(en) © ISO 2024
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ISO 7429-1:2024(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 7429-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Types of nozzles . 2
5 Requirements . 2
5.1 Samples .2
5.2 Measuring instruments .2
6 Environment . 2
7 Evaluation . 3
7.1 General .3
7.2 Placement of the nozzle on the retention container .3
7.3 One-way flow .3
7.3.1 General .3
7.3.2 Test system configuration .3
7.3.3 Evaluation procedure . .6
7.4 Circulation flow for ultrafine bubbles (UFBs) .
...
FINAL DRAFT
International
Standard
ISO/FDIS 7429-1
ISO/TC 281
Fine bubble technology —
Secretariat: JISC
Industrial and consumer device
Voting begins on:
applications —
2024-01-22
Part 1:
Voting terminates on:
2024-03-18
Assessment of water pressure
driven nozzles 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 7429-1:2024(en) © ISO 2024
---------------------- Page: 1 ----------------------
FINAL DRAFT
ISO/FDIS 7429-1:2024(en)
International
Standard
ISO/FDIS 7429-1
ISO/TC 281
Fine bubble technology —
Secretariat: JISC
Industrial and consumer device
Voting begins on:
applications —
Part 1:
Voting terminates on:
Assessment of water pressure
driven nozzles 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 7429-1:2024(en) © ISO 2024
© ISO 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO/FDIS 7429-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Types of nozzles . 2
5 Requirements . 2
5.1 Samples .2
5.2 Measuring instruments .2
6 Environment . 2
7 Evaluation .
...
ISO/DIS FDIS 7429-1:2023(E)
ISO /TC 281/WG 3
Date: 2023-06-15
Secretariat: JISC
Date: 2024-01-08
Fine bubble technology — Industrial and consumer device
applications — —
Part 1:
Assessment of water pressure- driven nozzles by evaluating size
and concentration indices of generated fine bubbles
FDIS stage
---------------------- Page: 1 ----------------------
ISO/DISFDIS 7429-1:20232024(E)
© 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
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
© ISO 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO/DISFDIS 7429-1:20232024(E)
© ISO 2023 – All rights reserved iii
© ISO 2024 – All rights reserved
iii
---------------------- Page: 3 ----------------------
ISO/DISFDIS 7429-1:20232024(E)
Contents
Foreword . vi
Introduction .vi i
Part 1: Assessment of water pressure driven nozzles by evaluating size and concentration indices of
generated fine bubbles . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Types of nozzles . 2
5 Requirements . 2
5.1 Samples . 2
5.2 Measuring instruments . 2
6 Environment . 2
7 Evaluation . 3
7.1 General . 3
7.2 Placement of the nozzle on the retention container. 3
7.3 One-way flow . 3
7.3.1 General . 3
7.3.2 Test system configuration . 3
7.3.3 Evaluation procedure . 7
7.4 Circulation flow for ultrafine bubbles (UFBs) .
...
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