{"id":318866,"date":"2024-10-19T22:01:46","date_gmt":"2024-10-19T22:01:46","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-234962019\/"},"modified":"2024-10-25T20:19:58","modified_gmt":"2024-10-25T20:19:58","slug":"bs-iso-234962019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-234962019\/","title":{"rendered":"BS ISO 23496:2019"},"content":{"rendered":"

This document specifies reference buffer solutions for the calibration of pH measuring equipment.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
8<\/td>\n4 Basic information
4.1 General
4.2 pH values of primary reference buffer solutions <\/td>\n<\/tr>\n
9<\/td>\n4.3 pH values of secondary reference buffer solutions <\/td>\n<\/tr>\n
13<\/td>\n5 Preparation of primary and secondary reference buffer solutions
5.1 General
5.2 Reference buffer solution A, pH(R)\u00a0=\u00a01,679(25\u00a0\u00b0C), Potassium tetraoxalate dihydrate
5.3 Reference buffer solution B, pH(R)\u00a0=\u00a03,557 (25\u00a0\u00b0C), Potassium hydrogen tartrate
5.4 Reference buffer solution C, pH(R)\u00a0=\u00a04,005 (25\u00a0\u00b0C), Potassium hydrogen phthalate
5.5 Reference buffer solution D, pH(R)\u00a0=\u00a06,865 (25\u00a0\u00b0C), Phosphate <\/td>\n<\/tr>\n
14<\/td>\n5.6 Reference buffer solution E, pH(R)\u00a0=\u00a07,413 (25\u00a0\u00b0C), Phosphate
5.7 Reference buffer solution F, pH(R)\u00a0=\u00a09,180 (25\u00a0\u00b0C), Borax
5.8 Reference buffer solution G, pH(R)\u00a0=\u00a012,454 (25\u00a0\u00b0C), Calcium hydroxide
5.9 Reference buffer solution H, pH(R)\u00a0=\u00a03,776 (25\u00a0\u00b0C), Potassium dihydrogen citrate
5.10 Reference buffer solution I, pH(R)\u00a0=\u00a010,012 (25\u00a0\u00b0C), Sodium carbonate\/sodium hydrogen carbonate
6 Storage and shelf life
7 Examples of pH(R) values of reference buffer solutions
8 Additional properties of reference buffer solutions <\/td>\n<\/tr>\n
16<\/td>\nAnnex\u00a0A (informative) Examples of pH(R) values as a function of temperature at temperatures from 55\u00a0\u00b0C to 95\u00a0\u00b0C <\/td>\n<\/tr>\n
17<\/td>\nAnnex\u00a0B (informative) Volumetric method <\/td>\n<\/tr>\n
19<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Determination of pH value. Reference buffer solutions for the calibration of pH measuring equipment<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":318874,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-318866","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/318866","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\/318874"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=318866"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=318866"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=318866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}