{"id":625143,"date":"2024-11-06T00:02:32","date_gmt":"2024-11-06T00:02:32","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-78872011\/"},"modified":"2024-11-06T00:02:32","modified_gmt":"2024-11-06T00:02:32","slug":"iso-78872011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-78872011\/","title":{"rendered":"ISO 7887:2011"},"content":{"rendered":"<p>ISO 7887:2011 specifies four different methods, designated A to D, for the examination of colour.<\/p>\n<p>The previously most employed method for assessment of water colour in water treatment plants, limnological surveys, etc. was based on the hexachloroplatinate scale. Methods C and D are harmonized with this traditional procedure.<\/p>\n<p>Method A involves examination of apparent colour by visually observing a water sample in a bottle. This gives only preliminary information, for example for use in field work. Only the apparent colour can be reported.<\/p>\n<p>Method B involves determination of the true colour of a water sample using optical apparatus and is applicable to raw and potable water and to industrial water of low colour. A subclause on interferences is included.<\/p>\n<p>Method C involves determination of the true colour of a water sample using optical apparatus for comparison with hexachloroplatinate concentration at wavelength, <i>?<\/i> = 410 nm. A subclause on interferences is included.<\/p>\n<p>Method D involves determination of colour by visual comparison with hexachloroplatinate standard solutions and can be applied to raw and drinking water. A subclause on interferences is included.<\/p>\n<p>Methods A and B are appropriate if the colour hue of the sample differs from the hue of the matching solution.<\/p>\n<p>When stating the result, the procedure used (methods A to D) is also recorded.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Water quality \u2014 Examination and determination of colour<\/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>2011-12<\/td>\n<td>20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":625152,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[217,2634],"product_tag":[],"class_list":{"0":"post-625143","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-060-60","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\/625143","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\/625152"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=625143"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=625143"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=625143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}