{"id":435786,"date":"2024-10-20T07:51:27","date_gmt":"2024-10-20T07:51:27","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-129462023-tc\/"},"modified":"2024-10-26T14:52:50","modified_gmt":"2024-10-26T14:52:50","slug":"bs-en-129462023-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-129462023-tc\/","title":{"rendered":"BS EN 12946:2023 &#8211; TC"},"content":{"rendered":"<p>TThis document specifies a complexometric method for the determination of the calcium content and the magnesium content of liming materials. It is not applicable to products with a mass fraction less than 2 % magnesium or those with a mass fraction more than 1 % P2O5 and is not applicable to silicate liming materials.<\/p>\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>21<b><\/td>\n<td>undefined  <\/td>\n<\/tr>\n<tr>\n<td><b>26<b><\/td>\n<td>1 Scope <br \/> 2 Normative references <br \/> 3 Terms and definitions <br \/> 4 Principle <br \/> 5 Reagents <br \/> 5.1 General <br \/> 5.2 Hydrochloric acid solution  <\/td>\n<\/tr>\n<tr>\n<td><b>27<b><\/td>\n<td>5.3 Hydrochloric acid solution <br \/> 5.4 Hydrochloric acid solution <br \/> 5.5 Standard calcium solution, containing 2,004 g of calcium per litre <br \/> 5.6 Standard magnesium solution, containing 1,216 g of magnesium per litre <br \/> 5.7 Ethylenediamine tetraacetic acid (EDTA) standard solution, c(EDTA) = 0,05 mol\/l <br \/> 5.8 Calcein thymolphthalein indicator  <\/td>\n<\/tr>\n<tr>\n<td><b>28<b><\/td>\n<td>5.9 Calcon carbonic acid indicator <br \/> 5.10 Eriochrome black T indicator <br \/> 5.11 Triethanolamine <br \/> 5.12 Buffer solution, pH 10,5 <br \/> 5.13 Sodium hydroxide solution <br \/> 6 Apparatus <br \/> 7 Sampling <br \/> 8 Procedure <br \/> 8.1 Preparation <br \/> 8.1.1 Preparation of test sample  <\/td>\n<\/tr>\n<tr>\n<td><b>29<b><\/td>\n<td>8.1.2 Preparation of test solution <br \/> 8.2 Determination <br \/> 8.2.1 Aliquot portion <br \/> 8.2.2 Titration in the presence of eriochrome black T <br \/> 8.2.3 Titration in the presence of calcein thymolphthalein or calcon carbonic acid  <\/td>\n<\/tr>\n<tr>\n<td><b>30<b><\/td>\n<td>8.3 Control test of the standard solutions <br \/> 9 Expression of results <br \/> 10 Precision <br \/> 10.1 General  <\/td>\n<\/tr>\n<tr>\n<td><b>31<b><\/td>\n<td>10.2 Repeatability <br \/> 10.3 Reproducibility <br \/> 11 Test report  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Tracked Changes. Liming materials. Determination of the calcium content and magnesium content. Complexometric method<\/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>2023<\/td>\n<td>34<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":435796,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-435786","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\/435786","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\/435796"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=435786"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=435786"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=435786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}