BSIS021257:2018 BSl Standards Publication Plastics Polymer polyols for use in the production of polyurethane Determination of the residual acrylonitrile and styrene monomer content by gas chromatography bsi. BSISO21257:2018 BRITISH STANDARD National foreword ThisBritish Standard is theUKimplementation ofIS021257:2018 The UK participation in its preparation was entrusted to Technical CommitteePRI/42,Fibrereinforcedthermosettingplastics andprepregs. A listoforganizations represented onthis committeecan be obtained on requesttoits secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @TheBritishStandardsInstitution2018 PublishedbyBSIStandardsLimited2018 ISBN9780580516429 ICS83.080.10 Compliancewitha BritishStandard cannot confer immunityfrom legal obligations. This British Standard was published under the authority of the Standards Policyand Strategy Committeeon31October2018. Amendments/corrigendaissued sincepublication Date Textaffected BS IS0 21257:2018 ISO INTERNATIONAL STANDARD 21257 First edition 2018-10-23 Plastics Polymer polyols for use in the production of polyurethane - Determination of the residual acrylonitrile and styrene monomer content by gas chromatography Reference number IS021257:2018(E) ISO ISO2018