IS 1528 : Part 22 : 2007 /ISO 8841 : 1991 Methods of Sampling and Physical Tests for Refractory Materials - Part 22 : Methods for Determination of Permeability to Gases of Dense Shaped Refractoy Products

National Foreword

This Indian Standard (Part 22) which is identical with ISO 8841 : 1991 ?Dense, shaped refractory products - Determination of permeability to gases? issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of theRefractories Sectional Committee and approval of the Metallurgical Engineering Division Council.

The text of ISO Standard has been approved as suitable for publication 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.

In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards, which are to be substituted in their places, are listed below along with their degree of equivalence for the editions indicated: