{"id":318332,"date":"2024-10-19T21:59:06","date_gmt":"2024-10-19T21:59:06","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-13523-152015\/"},"modified":"2024-10-25T20:16:35","modified_gmt":"2024-10-25T20:16:35","slug":"bs-en-13523-152015","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-13523-152015\/","title":{"rendered":"BS EN 13523-15:2015"},"content":{"rendered":"

This part of EN 13523<\/span> <\/span> defines terms of the procedure for determining the metamerism of a colour match of an organic coating on a metallic substrate.<\/p>\n

When two colour specimens have identical spectral reflection curves, they are matching under any illuminant irrespective of its spectral characteristics. This is termed a \u201cspectral match\u201d. It is also possible for two colour specimens having different spectral reflection curves to match visually under a given light source but not to match under another light source with different spectral characteristics; such matches are termed \u201cmetameric\u201d.<\/p>\n

One quantitative description of metamerism is the so-called \u201c metamerism index\u201d.<\/p>\n

The information of the metamerism index is of limited value where \u0394 E<\/i> (instrumental colour difference for a given illuminant, see EN 13523-3<\/span> <\/span>) is > 0,5. The metamerism index is not suited for determining the absolute colour difference or colour constancy of a given specimen at change of illuminant.<\/p>\n

The colour difference under the reference illuminant is to be measured in colour coordinates  L<\/i>*, a<\/i>* and  b<\/i>* (see EN 13523-3<\/span> <\/span>).<\/p>\n

Excluded from this method are organic coatings producing fluorescence and\/or which are multicoloured, pearlescent or metallic.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
5<\/td>\nEuropean foreword <\/td>\n<\/tr>\n
7<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle <\/td>\n<\/tr>\n
8<\/td>\n5 Apparatus
5.1 Spectrophotometer (see EN 13523-3)
6 Sampling
7 Test panels
8 Procedure
8.1 Calibration
8.2 Measurement <\/td>\n<\/tr>\n
9<\/td>\n9 Expression of results
10 Precision <\/td>\n<\/tr>\n
10<\/td>\n11 Test report <\/td>\n<\/tr>\n
11<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Coil coated metals. Test methods – Metamerism<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2015<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":318337,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[444,2641],"product_tag":[],"class_list":{"0":"post-318332","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-220-60","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\/318332","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\/318337"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=318332"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=318332"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=318332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}