{"id":305000,"date":"2024-10-19T20:51:59","date_gmt":"2024-10-19T20:51:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-7270-22012\/"},"modified":"2024-10-25T18:26:20","modified_gmt":"2024-10-25T18:26:20","slug":"bs-iso-7270-22012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-7270-22012\/","title":{"rendered":"BS ISO 7270-2:2012"},"content":{"rendered":"

This part of ISO 7270 specifies a pyrolytic gas-chromatographic method for the determination of the styrene\/butadiene\/isoprene ratio in copolymers, or blends of homopolymers and\/or copolymers, in raw rubbers or in unvulcanized or vulcanized compounds. It is applicable to copolymers\/terpolymers consisting of styrene, butadiene and isoprene, and blends of these polymers.<\/p>\n

\n

NOTE 1 The use of this part of ISO 7270 pre-supposes sufficient working knowledge of the principles and techniques of gas chromatography for the analyst to perform the operations described and interpret the results correctly.<\/p>\n<\/blockquote>\n

\n

NOTE 2 The styrene\/butadiene\/isoprene ratio determined by this test method is affected by the presence of resin and by a high level of sulfur.<\/p>\n<\/blockquote>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
3<\/td>\nCVP_Secretariat_Loca <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\n1\tScope
2\tNormative references
3\tPrinciple
4\tReagents <\/td>\n<\/tr>\n
8<\/td>\n5\tApparatus
5.1\tExtraction apparatus
5.2\tPyrolysis\/gas chromatography system <\/td>\n<\/tr>\n
9<\/td>\n6\tProcedure
6.1\tPreparation of test samples from calibration samples and unknown sample
6.2\tTest conditions <\/td>\n<\/tr>\n
12<\/td>\n6.3\tPreparation of calibration curves <\/td>\n<\/tr>\n
13<\/td>\n6.4\tAnalysis of the unknown sample <\/td>\n<\/tr>\n
14<\/td>\n7\tExpression of results
8\tPrecision
9\tTest report <\/td>\n<\/tr>\n
15<\/td>\nAnnex\u00a0A
\n(informative)<\/p>\n

Precision <\/td>\n<\/tr>\n

17<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Rubber. Analysis by pyrolytic gas-chromatographic methods – Determination of styrene\/butadiene\/isoprene ratio<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2012<\/td>\n20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":305009,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-305000","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/305000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/305009"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=305000"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=305000"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=305000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}