Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 8) (Third Revision) which is identical with ISO 1656 : 2014 ‘Rubber, raw natural, and rubber latex, natural - Determination of nitrogen content’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Methods of Test for Rubber and Rubber Products Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.

The second revision of this standard was published in 2005 and was based on ISO 1656 : 1996. The third revision of this standard has been undertaken to align it with the latest ISO 1656 : 2014 and to make pace with the latest International practices.

The Sectional Committee has also decided to prepare common methods of test for natural rubber latex under NRL (Natural Rubber Latex) series, namely, IS 3708 and this will be applicable to all types of natural rubbers latex being produced.

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.