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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)
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© ISO 2024
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Published in Switzerland
© ISO 2024 – All rights reserved
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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 .
...