Foreword

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This document was prepared by Technical Committee ISO/TC45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses), in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 7231:2010), which has been technically revised.

The main changes are as follows:

— the previous Annex A has been moved to Clause 6 as method B2;
— the previous 6.5 (the precision of method B1) has been moved to a new Annex A.
— the previous precision of method B2 has been added to a new Annex A.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

BS EN ISO 7231:2023

Polymeric materials, cellular, flexible. Determination of air flow value at constant pressure-drop

Current

Published:

31 Aug 2023