{"id":374746,"date":"2024-10-20T02:40:09","date_gmt":"2024-10-20T02:40:09","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-4589-42021\/"},"modified":"2024-10-26T04:39:09","modified_gmt":"2024-10-26T04:39:09","slug":"bs-iso-4589-42021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-4589-42021\/","title":{"rendered":"BS ISO 4589-4:2021"},"content":{"rendered":"

This document specifies a test method for determining the minimum volume fraction of oxygen, in admixture with nitrogen, at ambient temperature, that supports combustion of small vertical sheet test specimen under a specified gas velocity that is higher than that specified in ISO 4589-2<\/span><\/span>.<\/p>\n

\n
\n NOTE\n <\/div>\n

The result is expressed as a high gas velocity oxygen index (HOI).<\/p>\n<\/div>\n

In addition, this document specifies the testing apparatus for determining the HOI.<\/p>\n

The test method is applicable to materials in the form of sheets up to 2 mm thick. It is also applicable to flexible sheet materials that are supported vertically by a specified specimen holder.<\/p>\n

PDF Catalog<\/h4>\n\n\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 Principles for determination of HOI
5 Apparatus <\/td>\n<\/tr>\n
15<\/td>\n6 Calibration of equipment
7 Preparation of test specimens
7.1 Test specimen form <\/td>\n<\/tr>\n
16<\/td>\n7.2 Sampling
7.3 Test specimen dimensions and preparation
7.4 Marking of test specimen
7.5 Conditioning
8 Procedure for determination of HOI
8.1 Setting up the apparatus <\/td>\n<\/tr>\n
17<\/td>\n8.2 Setting volume fraction of oxygen and gas flow velocity
8.3 Procedure for ignition of the test specimen <\/td>\n<\/tr>\n
18<\/td>\n8.4 Assessing the burning behaviour of test specimen
8.5 Selecting successive volume fraction of oxygen
8.6 Determining the preliminary volume fraction of oxygen
8.7 Volume fraction of oxygen changes <\/td>\n<\/tr>\n
19<\/td>\n9 Calculation and expression of results
9.1 Calculation of the HOI <\/td>\n<\/tr>\n
20<\/td>\n9.2 Determination of k <\/td>\n<\/tr>\n
21<\/td>\n9.3 Standard deviation of oxygen volume fraction measurements
10 Precision of test results
11 Test report <\/td>\n<\/tr>\n
22<\/td>\nAnnex A (normative) Calibration of equipment <\/td>\n<\/tr>\n
23<\/td>\nAnnex B (informative) Example of test results sheet for HOI <\/td>\n<\/tr>\n
26<\/td>\nAnnex C (informative) Interlaboratory test data on HOI measurement <\/td>\n<\/tr>\n
28<\/td>\nAnnex D (informative) Blow-off behaviour at high gas velocity \u2014 How to predict the flammability of materials <\/td>\n<\/tr>\n
37<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Plastics. Determination of burning behaviour by oxygen index – High gas velocity test<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":374751,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1177,2641],"product_tag":[],"class_list":{"0":"post-374746","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\/374746","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\/374751"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=374746"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=374746"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=374746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}