Foreword

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This document was prepared by Technical Committee ISO/TC 201, Surface chemical analysis, Subcommittee SC 8, Glow discharge spectroscopy.

This third edition cancels and replaces the second edition (ISO/TS 25138:2019), which has been technically revised.

The main changes are as follows:

— updated listed types of array detectors;
— anode size 2,5 mm has been added to those commonly offered in commercial instruments;
— verifying that test specimens and other samples form a good vacuum seal has been emphasized;
— revised optical system check to include instruments with array type detectors;
— text “setting of the high voltage for the detectors” replaced with “setting of the parameters for detector sensitivity” throughout this document; instructions to carry out these settings modified to accommodate array type detectors;
— instructions to optimize the crater shape has been changed from mandatory to optional;
— subclause 6.4 “Minimum performance requirements” has been revised.

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.