{"id":339521,"date":"2024-10-19T23:46:28","date_gmt":"2024-10-19T23:46:28","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-68491996\/"},"modified":"2024-10-25T22:54:45","modified_gmt":"2024-10-25T22:54:45","slug":"bs-iso-68491996","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-68491996\/","title":{"rendered":"BS ISO 6849:1996"},"content":{"rendered":"<p>This International Standard specifies two methods for the determination of boron in photographic processing wastes. The first method is the estimation of borates by titration of the boric acid-mannitol complex, which is a stronger acid than the boric acid from which it is formed. It is suitable for boron concentrations of 0,1&nbsp;mg\/l and higher. In the range 0,1&nbsp;mg\/l to 5&nbsp;mg\/l, phosphate is removed by precipitation by lead acetate. In the range 1&nbsp;mg\/l to 100&nbsp;mg\/l, the sample is diluted 25 times; this eliminates phosphorous interference if the phosphorous concentration is below 500&nbsp;mg\/l.<\/p>\n<p>The second and alternative method is a spectrophotometric technique using methylene blue and is useful in the boron range of 0,1&nbsp;ml\/l to 1,0&nbsp;mg\/l, this being the concentration likely to be encountered in photographic processing wastes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Photography. Processing wastes. Determination of boron<\/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>1997<\/td>\n<td>14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":339523,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[716,2641],"product_tag":[],"class_list":{"0":"post-339521","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-37-040-30","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\/339521","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\/339523"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=339521"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=339521"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=339521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}