New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 14) which is identical with ISO 4048 : 2018 ‘Leather— Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Leather, Tanning Materials and Allied Products Sectional Committee and approval of the Chemical Division Council.

This Standard is the identical adoption of ISO 4048 : 2018 ‘Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content’ while the Indian Standard IS 582 : 1970 ‘Methods of chemical testing of leather (first revision)’ prescribes the methods of chemical testing for all types of leathers and includes determination of Solvent extractable substances in LC:4. Hence, there are two identical standards on the same subject.