{"id":589305,"date":"2024-11-05T21:07:19","date_gmt":"2024-11-05T21:07:19","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-129372000\/"},"modified":"2024-11-05T21:07:19","modified_gmt":"2024-11-05T21:07:19","slug":"iso-129372000","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-129372000\/","title":{"rendered":"ISO 12937:2000"},"content":{"rendered":"<p>This International Standard specifies a method for the direct determination of water in petroleum products boiling<\/p>\n<p>below 390 \u00b0C. It covers the mass fraction range 0,003 % (<i>m\/m<\/i>) to 0,100%(<i>m\/m<\/i>). It is not applicable to products<\/p>\n<p>containing ketones or to residual fuel oils.<\/p>\n<p>This International Standard may be applicable to lubricating base oils. However, the precision has not been<\/p>\n<p>established for these materials.<\/p>\n<p>The precision given in clause 12 is based upon data obtained using dual-cell, dual-electrolyte systems.<\/p>\n<p>NOTE 1 A number of substances and classes of compounds associated with condensation or oxidation-reduction reactions<\/p>\n<p>interfere in the determination of water by Karl Fischer titration. In petroleum products, the most common interferences are<\/p>\n<p>hydrogen sulfide and mercaptan sulfur, however, mass fractions of these below 0,003 % (<i>m\/m<\/i>) as sulfur will not cause<\/p>\n<p>significant interference over the range 0,003 % (<i>m\/m<\/i>) to 0,100%(<i>m\/m<\/i>) water. Other organic sulfur compounds commonly<\/p>\n<p>present such as sulfides, disulphides and thiophenes, do not interfere.<\/p>\n<p>NOTE 2 An alternative procedure is provided for information in annex B for the direct determination of water over the range<\/p>\n<p>0,003 % <i>(<\/i><i>V\/V<\/i><i>) <\/i>to 0,100 % <i>(<\/i><i>V\/V<\/i><i>) <\/i>in petroleum products. The limitations under which this alternative volume measurement may be<\/p>\n<p>used are listed in annex B.<\/p>\n<p>NOTE 3 For the purposes of this International Standard, the terms &#034;% (<i>m\/m<\/i>)&#034; and &#034;% (<i>V\/V<\/i>)&#034; are used to represent the mass<\/p>\n<p>and volume fraction of a material respectively.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Petroleum products \u2014 Determination of water \u2014 Coulometric Karl Fischer titration method<\/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>2000-11<\/td>\n<td>16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":589319,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1067,2634],"product_tag":[],"class_list":{"0":"post-589305","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-75-080","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\/589305","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\/589319"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=589305"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=589305"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=589305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}