{"id":305843,"date":"2024-10-19T20:56:31","date_gmt":"2024-10-19T20:56:31","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-218962020\/"},"modified":"2024-10-25T18:31:30","modified_gmt":"2024-10-25T18:31:30","slug":"bs-iso-218962020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-218962020\/","title":{"rendered":"BS ISO 21896:2020"},"content":{"rendered":"

This document defines a method for measuring the decolouration capability of commercial products, produced using paper and board dyed in mass and\/or printed with dye inks.<\/p>\n

This document does not apply to paper printed with pigment inks.<\/p>\n

PDF Catalog<\/h4>\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>\nundefined <\/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
11<\/td>\n4 Symbols and abbreviations
5 Principle
6 Apparatus
6.1 Pulp preparation material
6.2 Reductive bleaching with sodium hydrosulphite
6.3 Oxidative bleaching with hydrogen peroxide
6.4 Preparation of pads <\/td>\n<\/tr>\n
12<\/td>\n6.5 Optical measurements
7 Reagents
7.1 Reductive bleaching with sodium hydrosulphite
7.2 Oxidative bleaching with hydrogen peroxide
7.3 Preparation of pads <\/td>\n<\/tr>\n
13<\/td>\n8 Sampling
9 Procedure for preparation of pulp for optical measurements
9.1 Pulp preparation
9.2 Bleaching the pulp
9.3 Reductive bleaching with sodium hydrosulphite <\/td>\n<\/tr>\n
14<\/td>\n9.4 Oxidative bleaching with hydrogen peroxide
9.4.1 Bleaching conditions
9.4.2 Preparing the bleaching liquor <\/td>\n<\/tr>\n
15<\/td>\n9.4.3 Bleaching
10 Procedure for preparation of filter pads <\/td>\n<\/tr>\n
16<\/td>\n11 Conditioning of the filter pads for the measurements
12 Optical measurements and calculating the decolouration index
12.1 Measurement conditions
12.2 Measurements
12.3 Calculating the decolouration index <\/td>\n<\/tr>\n
17<\/td>\n13 Test Report <\/td>\n<\/tr>\n
18<\/td>\nAnnex A (informative) Sodium hydrosulphite titration <\/td>\n<\/tr>\n
20<\/td>\nAnnex B (informative) Peroxide titration <\/td>\n<\/tr>\n
22<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Paper, pulp, and recycling. Decolouration test of dye coloured paper products and paper products printed using dye inks<\/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>\n24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":305851,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1203,2641],"product_tag":[],"class_list":{"0":"post-305843","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-85-080-01","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\/305843","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\/305851"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=305843"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=305843"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=305843"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}