New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 2/Sec 7) which is identical with ISO 48-7 : 2018 ‘Rubber, vulcanized or thermoplastic - Determination of hardness - Part 7 : Apparent hardness of rubber-covered rollers by Shoretype durometer method’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation(s) of the Methods of Test for Rubber and Rubber Products Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.

Earlier, three Indian Standards, namely IS 3400 (Part 2) : 2014/ ISO 48 : 2010 Methods of test for vulcanized rubber: Part 2 Rubber vulcanized or thermoplastic - Determination of hardness (Hardness between 10 IRHD and 100 IRHD) (Fourth Revision), IS 3400 (Part 23/Sec 1) : 2018/ ISO 7619-1 : 2010 Methods of test for vulcanized rubbers: Part 23 Rubber - Determination of indentation hardness by means of pocket hardness meters, Sec 1 Durometer method (Shore Hardness) (First Revision) and IS 3400 (Part 23/Sec 2) : 2018/ ISO 7619-2 : 2010 Methods of test for vulcanized rubbers: Part 23 Rubber - Determination of indentation hardness by means of pocket hardness meters, Sec 2 IRHD pocket meter method (First Revision) were published for the determination of hardness under dual numbering system.