ISO 23742:2024

Test method for the evaluation of permeability and filtration efficiency distribution of bag filter medium

This document specifies a measuring method for the distribution of thickness, area mass, gas permeability and collection efficiency in the filter medium, and applies to both woven and non-woven filter medium. This document provides a method for sampling specimen (position, size and number) from the filter medium required to obtain its performance distribution accurately. The purpose of this document is to provide more accurate information about the morphology of the filter medium for users, and not to compare grade the performance of the filter medium.

Méthode d'essai pour l'évaluation de la perméabilité et de la distribution de l'efficacité de filtration d'un média filtrant à poches

General Information

• Status: Published
• Publication Date: 06-Jun-2024
• ICS: 13.040.99 - Other standards related to air quality
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: ISO/TC 142 - Cleaning equipment for air and other gases
• Drafting Committee: ISO/TC 142/WG 7 - Cleanable filter media used in industrial applications
• Current Stage: 6060 - International Standard published
• Start Date: 07-Jun-2024
• Due Date: 17-May-2024
• Completion Date: 07-Jun-2024

Standards Content (Sample)

International
Standard
ISO 23742
First edition
Test method for the evaluation of
2024-06
permeability and filtration efficiency
distribution of bag filter medium
Méthode d'essai pour l'évaluation de la perméabilité et de la
distribution de l'efficacité de filtration d'un média filtrant à poches
Reference number
ISO 23742:2024(en) © ISO 2024

---------------------- Page: 1 ----------------------
ISO 23742:2024(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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO 23742:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Determination of sampling . 2
4.1 General .2
4.2 Collection position, size and shape of representative sample sheets .2
4.3 Number of representative sample sheets .2
5 Preparation of specimen strips. 3
5.1 General .3
5.2 Standard atmosphere for conditioning and testing .3
5.3 Conditioning of specimen strips .3
5.4 Size of specimen strips .3
6 Measurement method - Thickness. 4
6.1 General .4
6.2 Apparatus .4
6.2.1 Thickness tester .
...

FINAL DRAFT
International
Standard
ISO/FDIS 23742
ISO/TC 142
Test method for the evaluation
Secretariat: UNI
of permeability and filtration
Voting begins on:
efficiency distribution of bag filter
2024-03-19
medium
Voting terminates on:
2024-05-14
Méthode d'essai pour l'évaluation de la perméabilité et de la
distribution de l'efficacité de filtration d'un média filtrant à
poches
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 23742:2024(en) © ISO 2024

---------------------- Page: 1 ----------------------
FINAL DRAFT
ISO/FDIS 23742:2024(en)
International
Standard
ISO/FDIS 23742
ISO/TC 142
Test method for the evaluation of
Secretariat: UNI
permeability and filtration efficiency
Voting begins on:
distribution of bag filter medium
Méthode d'essai pour l'évaluation de la perméabilité et de la
Voting terminates on:
distribution de l'efficacité de filtration d'un média filtrant à poches
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 23742:2024(en) © ISO 2024

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO/FDIS 23742:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Determination of sampling . 2
4.1 General .2
4.2 Collection position, size and shape of representative sample sheets .2
4.3 Number of representative sample sheets .2
5 Preparation of specimen strips. 3
5.1 General .
...

ISO/FDIS 23742:2024(E)
ISO/TC 142
Secretariat: UNI
Date: 2024-01-3003-05

Test method for the evaluation of permeability and filtration
efficiency distribution of bag filter medium
Méthode d'essai pour l'évaluation de la perméabilité et de la distribution de l'efficacité de filtration d'un média
filtrant à poches
FDIS stage

---------------------- Page: 1 ----------------------
ISO/FDIS 23742:2024(Een)
© 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
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2024 – All rights reserved
© ISO 2024 – All rights reserved

ii

---------------------- Page: 2 ----------------------
ISO/FDIS 23742:2024(Een)
Contents
Foreword . vi
Introduction . vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Determination of sampling . 2
4.1 General . 2
4.2 Collection position, size and shape of representative sample sheets . 2
4.3 Number of representative sample sheets . 3
5 Preparation of specimen strips . 4
5.1 General . 4
5.2 Standard atmosphere for conditioning and testing . 5
5.3 Conditioning of specimen strips . 5
5.4 Size of specimen strips . 5
6 Measurement method - Thickness. 5
6.1 General . 5
6.2 Apparatus . 5
6.2.1 Thickness tester . 5
6.2.2 Thickness gauge . 5
6.3 Procedure .
...