New Standard from Last Update.

NATIONAL FOREWORD

The Indian Standard (Part 13) which is identical with ISO 6743-12 : 1989 ‘Lubricants, industrial oils and related products (class L) — Classification — Part 12: Family Q (Heat transfer fluids)’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendations of the the Lubricants and their related products Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies 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.