{"id":322125,"date":"2024-10-19T22:18:05","date_gmt":"2024-10-19T22:18:05","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-69231988\/"},"modified":"2024-10-25T20:46:34","modified_gmt":"2024-10-25T20:46:34","slug":"bs-69231988","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-69231988\/","title":{"rendered":"BS 6923:1988"},"content":{"rendered":"<p>This British Standard provides a method of calculating the colour difference between two specimens of the same material, measured under the same conditions, such that the numerical value D<i>E,<\/i> the total colour difference, quantifies the perceptibility of the colour difference or the accept ability of the colour match. The latter permits the specification of a maximum value which depends only on the closeness of match required for a given end-use and not on the colour involved nor on the nature of the colour difference.<\/p>\n<blockquote>\n<p>NOTE 1 Appendix A gives test data for use in checking computer programs, and Appendix B contains a computer program for determining colour difference.<\/p>\n<p>NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.<\/p>\n<\/blockquote>\n<p>Describes a method using a modification of the internationally recognized CIELAB colour difference formula.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Method for calculation of small colour differences<\/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>1988<\/td>\n<td>12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":322130,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[275,2641],"product_tag":[],"class_list":{"0":"post-322125","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-180-20","7":"product_cat-bsi","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\/322125","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\/322130"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=322125"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=322125"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=322125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}