IS 101 : Part 7 : Sec 3 : 2020/ISO 3248 : 2016 Methods of Sampling and Test for Paints, Varnishes and Related Products - Part 7 Environmental Tests on Paint Films - Section 3 Determination of the effect of heat

ICS 87.040 CHD 20

Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 7/Sec 3) (Fourth Revision) which is identical with ISO 3248 : 2016 ‘Paints and varnishes — Determination of the effect of heat’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Paints, Varnishes and Related Products Sectional Committee and approval of the Chemical Division Council.

This standard was originally published in 1950 and subsequently revised in 1961, 1964 and 1990. During third revision of IS 101 considerable assistance was derived from ISO 3248 : 1975 ‘Paints and varnishes — Determination of the effect of heat’, issued by the International organization for Standardization to supersede clause 22 of IS 101 : 1964 ‘Methods of test for ready mixed paints and enamels (second revision)’ and this standard was developed and published in 1990 as (Part 7/Sec 3) of IS 101 series of standards.

The major changes in this revision are as follows:

a) cooling down of the test panels after the test has been changed from standard temperature to ambient temperature;

b) a principle clause has been added;

c) the normative references have been updated; and

d) the supplementary test conditions previously in Annex A have been integrated in the test report.

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/document’ 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.