{"id":319006,"date":"2024-10-19T22:02:26","date_gmt":"2024-10-19T22:02:26","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iso-ts-239732020\/"},"modified":"2024-10-25T20:20:48","modified_gmt":"2024-10-25T20:20:48","slug":"bsi-pd-iso-ts-239732020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iso-ts-239732020\/","title":{"rendered":"BSI PD ISO\/TS 23973:2020"},"content":{"rendered":"

This document establishes a valid method for separation of chemically heterogeneous polyethylene oxide (PEO) mixtures and for the determination the number and content of the chemically heterogeneous species in the overall sample.<\/p>\n

The method presented in this document serves as a technical guideline and enables laboratories to learn the principle of \u201c critical chromatography\u201d on a validated system.<\/p>\n

This method presented in this document with its stated system parameters is not applicable for other polymer classes, due to the diversity of the interactions between the polymer\/mobile phase\/stationary phase and the number of separation systems that are therefore available.<\/p>\n

The evaluation of the interlaboratory testing has shown that many error sources relate to the technique of liquid chromatography in general. Possible error sources are described in Annex A<\/span>.<\/p>\n

Details on the evaluation of the interlaboratory testing are given in Annex B<\/span>.<\/p>\n

Elugrams of the participants (excerpts) are given in Annex C<\/span>.<\/p>\n

Investigations of the long-term stability of the test mixture are given in Annex D<\/span>.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Principle
5 Apparatus
5.1 General <\/td>\n<\/tr>\n
11<\/td>\n5.2 Eluent supply
5.3 Pump <\/td>\n<\/tr>\n
12<\/td>\n5.4 Injection system
5.5 Separation columns <\/td>\n<\/tr>\n
13<\/td>\n5.6 Column temperature control
5.7 Detectors
5.8 Eluent
5.9 Data acquisition
6 Sample preparation <\/td>\n<\/tr>\n
14<\/td>\n7 Performance of the measurements
7.1 Determination of the critical conditions <\/td>\n<\/tr>\n
15<\/td>\n7.2 Analysis of the validation kit
8 Test report <\/td>\n<\/tr>\n
17<\/td>\nAnnex A (informative) Error sources <\/td>\n<\/tr>\n
18<\/td>\nAnnex B (informative) Evaluation of the interlaboratory testing <\/td>\n<\/tr>\n
25<\/td>\nAnnex C (informative) Elugrams of the participants (excerpts) <\/td>\n<\/tr>\n
49<\/td>\nAnnex D (informative) Investigations of the long-term stability of the test mixture <\/td>\n<\/tr>\n
55<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Liquid chromatography at critical conditions (LCCC). Chemical heterogeneity of polyethylene oxides<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n56<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":319010,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1001,2641],"product_tag":[],"class_list":{"0":"post-319006","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-71-040-50","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/319006","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\/319010"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=319006"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=319006"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=319006"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}