IS 6191 : Part 7 : 2025/ISO 15701 : 2022 Methods of Micro-Biological, Colour Fastness and Microscopical Tests for Leather - Part 7 Colour Fastness to Migration into Polymeric Material

NATIONAL FOREWORD

This Indian Standard (Part 7) which is identical to ISO 15701 : 2022 'Leather - Tests for colour fastness - Colour fastness to migration into polymeric material' issued by the International Organization for Standardization (ISO), was adopted by the Bureau of Indian Standards on the recommendation of the Leather, Tanning Materials and Allied Products Sectional Committee and approval of the Chemical Division Council.

IS 6191 : 1971 'Methods of micro-biological, colour fastness and microscopical tests for leather' prescribes various microbiological test methods, colour fastness test methods and test methods for the preparation of microscopical slides for assessment of leather, hides and skins. The Committee responsible for formulating this standard has decided to harmonize the methods of test prescribed in IS 6191 with those prescribed in ISO/IULTCS standards. Accordingly, the Committee decided to retain IS 6191 and publish the harmonized/adopted test methods published by ISO/IULTCS in various parts of IS 6191 as this standard is widely recognized by the Indian Leather Industry.