Revised Standard from Last Update.

NATIONAL FOREWORD

The Indian Standard (First Revision) which is identical with ISO 14851 : 2019 ‘Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - Method by measuring the oxygen demand in a closed respirometer’ 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.

This standard was originally published in 1999. The first revision of this standard has been undertaken to align it with the latest version of ISO 14851 : 2019.

The major changes in this revision are as follows:

a) the footnotes have been renumbered;

b) in Annex C, errors in the key to Fig. C.1 have been corrected and minor improvements made to the figure itself;

c) in scope and clause 8, soil and compost have been excluded for the inoculums used in this document;

d) in 8.4, numbers of test flask for the test material and blank control have been changed from two to three;

e) references in this document have been updated for latest active version; and

f) the Bibliography has been updated.