INTERNATIONALSTANDARDISO3521:1997 TECHNICAL CORRIGENDUM 1 [so Published 2003-02-15 INTERNATIONAL ORGANIZATIONFOR STANDARDIZATION ：MEKAYHAPOAHA OPTAHM3ALIMO CTAHAAPTW3 LEDENORMALISATION Plastics Unsaturated polyester and epoxy resins Determination of overall volume shrinkage TECHNICALCORRIGENDUM 1 Plastiques - Résines d'epoxydes et de polyesters non satures - Determination du retrait global en volume RECTIFICATIFTECHNIQUE1 Subcommittee SC 12, Thermosetting materials Page 1 Clause 4 Replace the equation Overall volume shrinkage = Uncured specific gravity by Overall volume shrinkage : Cured specific gravity ICS 83.080.10 Ref. No. ISO 3521:1997/Cor.1:2003(E) @IsO2003-All rights reserved with ISC No reproduction or networking permited withoutlicense from IHS Not for Resale ISO 3521:1997/Cor.1:2003(E) Page 5 Subclause 7.4 Replace the formula Pc - Po ×100 po by Pc= Po ×100 Pc 2 @ ISO 2003 -All rights reserved ational Organization for Standardization No reproduc Tby IHS undel or networking permtted without licensefromIHS Not for Resale Not fr Resale Nrroucionorneorkng pemitedwithout lienefomH