{"id":604737,"date":"2024-11-05T22:25:02","date_gmt":"2024-11-05T22:25:02","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-209782020\/"},"modified":"2024-11-05T22:25:02","modified_gmt":"2024-11-05T22:25:02","slug":"iso-209782020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-209782020\/","title":{"rendered":"ISO 20978:2020"},"content":{"rendered":"<p>This document specifies two methods for the determination of the neutralizing value (NV) of liming materials.<\/p>\n<p>Method A is applicable to all liming materials except silicate liming materials.<\/p>\n<p>NOTE 1    Examples of hard liming materials are limestone and dolomite. Examples of soft liming materials are chalk, marl and burnt lime. <\/p>\n<p>Method B is applicable to all liming materials.<\/p>\n<p>Neither method correctly takes into account the potential neutralizing value of material containing more than 3 % P<sub>2<\/sub>O<sub>5<\/sub>. For a more accurate agronomic assessment of products containing more than 3 % P<sub>2<\/sub>O<sub>5<\/sub>, EN 14984<sup>[8] <\/sup>is used to determine the liming efficiency.<\/p>\n<p>NOTE 2  The methods described in ISO 6598 and ISO 7497 can be used for the determination of P<sub>2<\/sub>O<sub>5<\/sub> content. Further information on P analyses is given in References [5] and [6].<\/p>\n<p>NOTE 3  Carbonate consumes H<sup>+<\/sup> and removes acidity in solution with subsequent dissociation to H<sub>2<\/sub>O and CO<sub>2<\/sub>. Forms of orthophosphate can consume H<sup>+<\/sup> but are not dissociated to molecular forms that remove acidity. The acidity is back titrated with alkali causing an underestimation of NV.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Liming material \u2014 Determination of neutralizing value \u2014 Titrimetric methods<\/b><\/p>\n<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\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>2020-05<\/td>\n<td>22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":604750,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[939,2634],"product_tag":[],"class_list":{"0":"post-604737","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-65-080","7":"product_cat-iso","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\/604737","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\/604750"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=604737"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=604737"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=604737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}