NATIONAL FOREWORD

This Indian Standard (Part 3) which is identical with IEC 62021-3 : 2014 ‘Insulating liquids — Determination of acidity — Part 3: Test methods for non-mineral insulating oils’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards onthe recommendation of the Fluids for Electrotechnical Applications Sectional Committee and approval of the Electrotechnical Division Council.

This standard has been published in three parts. Other parts in this series are:

Part 1 Automatic potentiometric titration

Part 2 Colourimetric titration

The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.