NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 15985 : 2014 ‘Plastics — Determination of the ultimate anaerobic biodegradation under high-solids anaerobic-digestion conditions — Method by analysis of released biogas’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Methods of Sampling and Test for Plastics Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.

The standard was originally published in 2004 which was identical with ISO 15985 : 2004. The first revision of this standard has been undertaken to align it with the latest version of ISO 15985 : 2014.

The major changes in this revision are as follows:

• It incorporates the Technical Corrigendum ISO 15985 : 2004/Cor. 1 : 2007.

• Requirements regarding disintegration have been removed.

• Units added where necessary.

• Bibliography updated.

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.