{"id":338265,"date":"2024-10-19T23:40:02","date_gmt":"2024-10-19T23:40:02","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-16634-22016\/"},"modified":"2024-10-25T22:46:02","modified_gmt":"2024-10-25T22:46:02","slug":"bs-en-iso-16634-22016","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-16634-22016\/","title":{"rendered":"BS EN ISO 16634-2:2016"},"content":{"rendered":"<p>This part of <span class=\"std\"> <span class=\"std-ref\">ISO&nbsp;16634<\/span> <\/span> specifies a method for the determination of the total nitrogen content and the calculation of the crude protein content of cereals, pulses and milled cereal products.<\/p>\n<p>This method, like the Kjeldahl method (see References <span class=\"xref\">[1]<\/span> and <span class=\"xref\">[6]<\/span>), does not distinguish between protein nitrogen and non-protein nitrogen. For the calculation of the protein content, various conversion factors are used (see <span class=\"xref\">3.2<\/span>).<\/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>4<b><\/td>\n<td>European 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>10<b><\/td>\n<td>4 Principle <br \/> 5 Reagents  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>6 Apparatus <br \/> 7 Sampling <br \/> 8 Preparation of the test sample  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>9 Procedure <br \/> 9.1 General <br \/> 9.2 Test portion <br \/> 9.3 Control of oxygen supply  <\/td>\n<\/tr>\n<tr>\n<td><b>13<b><\/td>\n<td>9.4 Calibration <br \/> 9.5 Determination <br \/> 9.6 Detection and data processing  <\/td>\n<\/tr>\n<tr>\n<td><b>14<b><\/td>\n<td>10 Calculation and expression of results <br \/> 10.1 Calculation <br \/> 10.1.1 Nitrogen content <br \/> 10.1.2 Crude protein content <br \/> 10.2 Expression of results <br \/> 11 Precision <br \/> 11.1 Interlaboratory tests  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>11.2 Repeatability <br \/> 11.3 Reproducibility <br \/> 11.4 Critical difference <br \/> 11.4.1 Comparison of two groups of measurements in the same laboratory  <\/td>\n<\/tr>\n<tr>\n<td><b>16<b><\/td>\n<td>11.4.2 Comparison of two groups of measurements in two different laboratories <br \/> 11.5 Uncertainty <br \/> 12 Test report  <\/td>\n<\/tr>\n<tr>\n<td><b>17<b><\/td>\n<td>Annex\u00a0A (informative)  Flowchart for a basic Dumas apparatus  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>Annex\u00a0B (informative)  Schematic diagrams of suitable types of Dumas apparatus  <\/td>\n<\/tr>\n<tr>\n<td><b>21<b><\/td>\n<td>Annex\u00a0C (informative)  Equipment calibration  <\/td>\n<\/tr>\n<tr>\n<td><b>23<b><\/td>\n<td>Annex\u00a0D (informative)  Results of interlaboratory tests  <\/td>\n<\/tr>\n<tr>\n<td><b>30<b><\/td>\n<td>Bibliography  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content &#8211; Cereals, pulses and milled cereal products<\/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>2016<\/td>\n<td>36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":338273,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-338265","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\/338265","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\/338273"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=338265"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=338265"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=338265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}