{"id":315827,"date":"2024-10-19T21:46:30","date_gmt":"2024-10-19T21:46:30","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-139752019\/"},"modified":"2024-10-25T19:55:26","modified_gmt":"2024-10-25T19:55:26","slug":"bs-iso-139752019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-139752019\/","title":{"rendered":"BS ISO 13975:2019"},"content":{"rendered":"<p>This document specifies a method of evaluating the ultimate anaerobic biodegradability of plastic materials in a controlled anaerobic slurry digestion system with a solids concentration not exceeding 15&nbsp;%, which is often found for the treatment of sewage sludge, livestock faeces or garbage. The test method is designed to yield a percentage and rate of conversion of the organic carbon in the test materials to carbon dioxide and methane produced as biogas.<\/p>\n<p>The method applies to the following materials, provided they have a known carbon content:<\/p>\n<ul>\n<li>\n<p>natural and\/or synthetic polymers, copolymers or mixtures;<\/p>\n<\/li>\n<li>\n<p>plastic materials that contain additives such as plasticizers, colorants, or other compounds;<\/p>\n<\/li>\n<li>\n<p>water-soluble polymers.<\/p>\n<\/li>\n<\/ul>\n<p>It does not apply to materials which exhibit inhibitory effects on the test microorganisms at the concentration chosen for the test.<\/p>\n<div class=\"non-normative-note\">\n<div class=\"note-label\">\n  NOTE\n <\/div>\n<p>Inhibitory effects can be determined by an inhibition test (e.g. <span class=\"std\"><span class=\"std-ref\">ISO&nbsp;13641-1<\/span><\/span> or <span class=\"std\"><span class=\"std-ref\">ISO&nbsp;13641-2<\/span><\/span>).<\/p>\n<\/div>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>National foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>6<b><\/td>\n<td>Foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>7<b><\/td>\n<td>Introduction  <\/td>\n<\/tr>\n<tr>\n<td><b>9<b><\/td>\n<td>1 Scope <br \/> 2 Normative references <br \/> 3 Terms and definitions  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>4 Principle <br \/> 5 Test and reference materials <br \/> 6 Apparatus  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>7 Procedure <br \/> 7.1 General <br \/> 7.2 Preparation of inoculum  <\/td>\n<\/tr>\n<tr>\n<td><b>13<b><\/td>\n<td>7.3 Start-up of the test <br \/> 7.4 Measurement of biogas produced (see Annex A) <br \/> 7.5 Test duration <br \/> 7.6 Measurement of dissolved inorganic carbon (see Annex B)  <\/td>\n<\/tr>\n<tr>\n<td><b>14<b><\/td>\n<td>8 Calculation and expression of results <br \/> 8.1 Amount of biogas produced <br \/> 8.2 Amount of dissolved inorganic carbon <br \/> 8.3 Calculation of percentage biodegradation  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>9 Expression and interpretation of results <br \/> 10 Validity of results <br \/> 11 Test report  <\/td>\n<\/tr>\n<tr>\n<td><b>16<b><\/td>\n<td>Annex A (informative) Examples of test systems  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>Annex B (informative) Example of apparatus for measurement of biogas dissolved in slurry  <\/td>\n<\/tr>\n<tr>\n<td><b>19<b><\/td>\n<td>Annex C (informative) Example of a biodegradation curve  <\/td>\n<\/tr>\n<tr>\n<td><b>20<b><\/td>\n<td>Annex D (informative) Table of water vapour pressures at various temperatures  <\/td>\n<\/tr>\n<tr>\n<td><b>21<b><\/td>\n<td>Bibliography  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Plastics. Determination of the ultimate anaerobic biodegradation of plastic materials in controlled slurry digestion systems. Method by measurement of biogas production<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2019<\/td>\n<td>22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":315831,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1177,2641],"product_tag":[],"class_list":{"0":"post-315827","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-01","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\/315827","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\/315831"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=315827"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=315827"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=315827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}