ISO 7383-1:2024
(Main)Fine bubble technology — Evaluation method for determining gas content in fine bubble dispersions in water — Part 1: Oxygen content
Fine bubble technology — Evaluation method for determining gas content in fine bubble dispersions in water — Part 1: Oxygen content
This document specifies evaluation methods for the oxygen content in fine bubble dispersion in water. Three test methods which are adopted include the optical sensor, the electrochemical probe and the iodometric method. The first two methods have an advantage in availability of in situ and real-time measurement, and high accessibility to commercially available instruments. The last one, composed of a well-established chemical analysis procedure, is advantageous in the situation where the instruments to be used in the first two methods are unavailable. The detection limits of the electrochemical and optical sensor methods are stated in the instruction manuals of the instruments, in most cases 0,1 mg/l or 0,2 mg/l. The upper limit depends on the specification of the instrument used. Most instruments allow measurement of a supersaturated sample. Measurement range of the iodometric method is between 0,2 mg/l and 20 mg/l. NOTE Chemical analysis methods other than the iodometric method can be applied[1] as an alternative.
Technologie des fines bulles — Méthode d'évaluation pour déterminer la teneur en gaz dans les dispersions de fines bulles dans l'eau — Partie 1: Teneur en oxygène
General Information
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Standards Content (Sample)
International
Standard
ISO 7383-1
First edition
Fine bubble technology —
2024-03
Evaluation method for determining
gas content in fine bubble
dispersions in water —
Part 1:
Oxygen content
Technologie des fines bulles — Méthode d'évaluation pour
déterminer la teneur en gaz dans les dispersions de fines bulles
dans l'eau —
Partie 1: Teneur en oxygène
Reference number
ISO 7383-1:2024(en) © ISO 2024
---------------------- Page: 1 ----------------------
ISO 7383-1:2024(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
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Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO 7383-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Interferences . 2
4.1 Iodometric method .2
4.2 Electrochemical probe method .2
5 Implication of measurement result . 2
6 Requirement . 2
6.1 General .2
6.2 Correction for the salinity of sample water .3
7 Apparatus . 3
7.1 Optical sensor method .3
7.2 Electrochemical probe method .3
7.3 Iodometric method .3
8 Procedure .
...
International
Standard
ISO 7383-1
First edition
Fine bubble technology —
Evaluation method for determining
gas content in fine bubble
dispersions in water —
Part 1:
Oxygen content
PROOF/ÉPREUVE
Reference number
ISO 7383-1:2024(en) © ISO 2024
---------------------- Page: 1 ----------------------
ISO 7383-1:2024(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
PROOF/ÉPREUVE
© ISO 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO 7383-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Interferences . 2
4.1 Iodometric method .2
4.2 Electrochemical probe method .2
5 Implication of measurement result . 2
6 Requirement . 2
6.1 General .2
6.2 Correction for the salinity of sample water .3
7 Apparatus . 3
7.1 Optical sensor method .3
7.2 Electrochemical probe method .3
7.3 Iodometric method .3
8 Procedure . 3
8.1 General .
...
ISO/DIS PRF 7383-1:2023(E)
ISO /TC 281/WG 2
Secretariat: JISC
Date: 2023-05-172024-01-04
Fine bubble technology — Evaluation method for determining gas
content in fine bubble dispersions in water —
Part 1:
Oxygen content
PROOF
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ISO/DIS PRF 7383:2023-1:2024(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/DIS PRF 7383:2023-1:2024(E)
Contents
Foreword . vi
Introduction .vi i
Part 1: Oxygen content . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Interferences . 2
4.1 Iodometric method . 2
4.2 Electrochemical probe method . 2
5 Implication of measurement result . 2
6 Requirement . 3
6.1 General . 3
6.2 Correction for the salinity of sample water . 3
7 Apparatus . 3
7.1 Optical sensor method . 3
7.2 Electrochemical probe method . 3
7.3 Iodometric method . 3
8 Procedure . 3
8.1 General . 3
8.2 Optical sensor method . 4
8.2.1 General .
...
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