Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 18898 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis.

This second edition cancels and replaces the first edition (ISO 18898:2006), which has been technically revised as follows:

— for hand-held durometers of types A, D and AO, an increased spring force tolerance is now allowed (see footnotes to Tables 1, 2 and 3 and Tables 19, 20 and 21);
— for type A, D and AO durometers, the number of spring force measuring points may be less than ten, as long as linearity of measurement is ensured, but not less than three (see 5.2.5.1, 5.2.5.2 and 5.2.5.3);
— the size of the pressure foot in Table 9 has been redefined to include circular pressure feet.

BS ISO 18898:2012

Rubber. Calibration and verification of hardness testers

Published:

31 Jul 2012

Withdrawn:

29 Feb 2016