{"id":659571,"date":"2024-11-06T02:45:13","date_gmt":"2024-11-06T02:45:13","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/jis-p-8121-12012\/"},"modified":"2024-11-06T02:45:13","modified_gmt":"2024-11-06T02:45:13","slug":"jis-p-8121-12012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/jis\/jis-p-8121-12012\/","title":{"rendered":"JIS P 8121-1:2012"},"content":{"rendered":"<p>This Standard specifies a method for the determination of the drainability of a pulp suspension in water in terms of the Schopper-Riegler (SR) number.<\/p>\n<p>\nThe Schopper-Riegler test is designed to provide a measure of the rate at which a dilute suspension of pulp may be dewatered.<\/p>\n<p>\nIt has been shown that the drainability is related to the surface conditions and swelling of the fibres, and constitutes a useful index of the amount of mechanical treatment to which the pulp has been subjected.<\/p>\n<p>\nIn principle, this method is applicable to all kinds of pulp in aqueous suspension.<\/p>\n<p>\nHowever, in practice, the Schopper-Riegler test provides acceptable results only if a sufficiently dense mat of fibres is formed on the wire screen.<\/p>\n<p>\nFor this reason, the test is not recommended for some extremely short-fibred pulps, such as those from wellbeaten hardwoods, as most of the fibres will pass through the wire screen, resulting in anomalous reduction of the SR number.<\/p>\n<p>\nThe most reliable results are obtained within the range of 100 SR to 900 SR number.<\/p>\n<p>\nThe results of this test do not necessarily correlate with the drainage behaviour of a pulp material on a commercial paper machine.<\/p>\n<p>\nNOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows :<\/p>\n<p>\nISO 5267-1: 1999 Pulps &#8211; Determination of drainablity &#8211; Part 1 : Schopper-Riegler method (MOD)<\/p>\n<p>\nThe symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO\/lEC Guide 21-1.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Pulps &#8211; Determination of drain ability &#8211; Part 1: Schopper-Riegler 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\/jis\/\"><b>JIS<\/b><\/a><\/td>\n<td>2012-06-20<\/td>\n<td>22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":659583,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1200,2655],"product_tag":[],"class_list":{"0":"post-659571","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-85-040","7":"product_cat-jis","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\/659571","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\/659583"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=659571"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=659571"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=659571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}