Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision), which is identical with ISO 6145-1 : 2019 ‘Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 1: General aspects’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Industrial Gases Sectional Committee and approval of the Chemical Division Council.

This standard provides basic information to support an informed choice for one or another method for the preparation of calibration gas mixtures. It also describes how these methods can be used to establish metrological traceability for the composition of the prepared gas mixtures.