NATIONAL FOREWORD

This Indian Standards (Second Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Glass, Glassware and Laboratoryware Sectional Committee had been approved by the Chemical Division Council.

This standard was first published in 1960, based on IND/S/MED/5808, issued by Ministry of Defence, Government of India, and MED/TDES/843, issued by British Standards Institution, UK. However, to bring it at par with the prevailing International Standard, the standard was revised in 2000. In the first revision, the capacities of the flasks had been modified. For simplicity of manufacture, pear-shaped flasks had been removed. More varieties in the shape and size of side-arms were introduced.

In this revision, the Committee observed that in ISO 6556 : 2012 almost all the viewpoints provided by India at different stages of documents have been incorporated. Therefore, the Committee felt that this standard be revised by adoption of ISO 6556 : 2012 on dual number basis.

The text of ISO standard has been proposed to be approved as suitable for publication as 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.