IS 9001 : PART 20 : 2010/IEC 60068-3-11 : 2007 : Guidance for Environmental Testing Part 20 Calculation of Uncertainty of Conditions in Climatic Test Chambers

NATIONAL FOREWORD

This Indian Standard (Part 20) which is identical with IEC 60068-3-11 : 2007 'Environmental testing - Part 3-11: Supporting documentation and guidance - Calculation of uncertainty of conditions in climatic test chambers' issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Environmental Testing Procedures Sectional Committee and approval of the Electronics and Information Technology Division Council

The text of IEC Standard has been approved as suitable for puulication as an Indian Standard without deviations. Certain 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.