{"id":3517,"date":"2016-01-22T16:44:01","date_gmt":"2016-01-22T16:44:01","guid":{"rendered":"http:\/\/ecbiz178.inmotionhosting.com\/~nestoi5\/?page_id=3517"},"modified":"2023-12-06T18:49:59","modified_gmt":"2023-12-06T18:49:59","slug":"acid-number","status":"publish","type":"page","link":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/","title":{"rendered":"ACID NUMBER"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"3517\" class=\"elementor elementor-3517\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5286a68 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5286a68\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-extended\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-8c54ef9\" data-id=\"8c54ef9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-adafb26 elementor-widget elementor-widget-image\" data-id=\"adafb26\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"604\" height=\"453\" src=\"https:\/\/testoil.com\/wp-content\/uploads\/2021\/03\/acid-number-titration.jpg\" class=\"attachment-large size-large wp-image-44912\" alt=\"TAN acid number titration\" srcset=\"https:\/\/testoil.com\/wp-content\/uploads\/2021\/03\/acid-number-titration.jpg 1024w, https:\/\/testoil.com\/wp-content\/uploads\/2021\/03\/acid-number-titration-300x225.jpg 300w, https:\/\/testoil.com\/wp-content\/uploads\/2021\/03\/acid-number-titration-768x576.jpg 768w, https:\/\/testoil.com\/wp-content\/uploads\/2021\/03\/acid-number-titration-200x150.jpg 200w\" sizes=\"(max-width: 604px) 100vw, 604px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-166a8d3\" data-id=\"166a8d3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7947159 elementor-widget elementor-widget-text-editor\" data-id=\"7947159\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"h2\">Acid Number<\/h2><center><em>The Acid Number test measures the level of acidity in a lubricant<\/em><\/center><p class=\"service-box_txt\">Acid Number (AN) is an indicator of oil serviceability. It is useful in monitoring acid buildup in oils due to depletion of antioxidants. Oil oxidation causes acidic byproducts to form. High acid levels can indicate excessive oil oxidation or depletion of the oil additives and can lead to corrosion of the internal components. By monitoring the acid level, the oil can be changed before any damage occurs.<\/p><p class=\"service-box_txt\"><b>Operating Principle<\/b><br \/>A portion of the sample is diluted and then titrated with a basic solution to a certain end point. The acid number result is an expression of how much titrant is needed per amount of sample. Higher numbers indicate a higher acidity level. ASTM method \u2013 D974<\/p><p class=\"service-box_txt\"><b>Significance<\/b><br \/>As antioxidants are consumed during use, generated acids will not be neutralized and will start to increase in concentration. By monitoring acid number results, a component of lubricant health can be ascertained.<\/p><p class=\"service-box_txt\"><b>Applications<\/b><br \/>All industrial lubricating oils and a limited amount of combustion engine oils. This test is not appropriate for high water content fluids such as water glycols and oil \/ water emulsions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-17c8bf5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"17c8bf5\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-f2f5373\" data-id=\"f2f5373\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-09f87c2 elementor-align-right elementor-widget elementor-widget-button\" data-id=\"09f87c2\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">COMPLETE TEST LIST<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-e9c9bc1\" data-id=\"e9c9bc1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-69b225f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"69b225f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2397125\" data-id=\"2397125\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-21ee86b elementor-widget elementor-widget-spacer\" data-id=\"21ee86b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"Acid Number The Acid Number test measures the level of acidity in a lubricant Acid Number (AN) is an indicator of oil serviceability. It is useful in monitoring acid buildup in oils due to depletion of antioxidants. Oil oxidation causes acidic byproducts to form. High acid levels can indicate excessive oil oxidation or depletion of the oil additives and can&nbsp;<a href=\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/\" class=\"read-more\">Continue Reading<\/a>","protected":false},"author":1,"featured_media":3486,"parent":2057,"menu_order":0,"comment_status":"open","ping_status":"open","template":"page-fullwidth.php","meta":{"content-type":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3517","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.0 (Yoast SEO v24.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ACID NUMBER - TestOil<\/title>\n<meta name=\"description\" content=\"The Acid Number test measures the level of acidity in a lubricant.\u00a0High acid levels can indicate excessive oil oxidation or depletion of the oil additives.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ACID NUMBER\" \/>\n<meta property=\"og:description\" content=\"The Acid Number test measures the level of acidity in a lubricant.\u00a0High acid levels can indicate excessive oil oxidation or depletion of the oil additives.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/\" \/>\n<meta property=\"og:site_name\" content=\"TestOil\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/TESTOILanalysis\" \/>\n<meta property=\"article:modified_time\" content=\"2023-12-06T18:49:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"768\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@TESTOILAnalysis\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/\",\"url\":\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/\",\"name\":\"ACID NUMBER - TestOil\",\"isPartOf\":{\"@id\":\"https:\/\/testoil.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg\",\"datePublished\":\"2016-01-22T16:44:01+00:00\",\"dateModified\":\"2023-12-06T18:49:59+00:00\",\"description\":\"The Acid Number test measures the level of acidity in a lubricant.\u00a0High acid levels can indicate excessive oil oxidation or depletion of the oil additives.\",\"breadcrumb\":{\"@id\":\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#primaryimage\",\"url\":\"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg\",\"contentUrl\":\"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg\",\"width\":1024,\"height\":768,\"caption\":\"ACID NUMBER\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/testoil.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Services\",\"item\":\"https:\/\/testoil.com\/services\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Oil Analysis\",\"item\":\"https:\/\/testoil.com\/services\/oil-analysis\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"ACID NUMBER\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/testoil.com\/#website\",\"url\":\"https:\/\/testoil.com\/\",\"name\":\"TestOil\",\"description\":\"Oil Analysis\",\"publisher\":{\"@id\":\"https:\/\/testoil.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/testoil.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/testoil.com\/#organization\",\"name\":\"Eurofins TestOil\",\"url\":\"https:\/\/testoil.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/testoil.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/testoil.com\/wp-content\/uploads\/2023\/02\/TestOil-01_RGB.png\",\"contentUrl\":\"https:\/\/testoil.com\/wp-content\/uploads\/2023\/02\/TestOil-01_RGB.png\",\"width\":867,\"height\":184,\"caption\":\"Eurofins TestOil\"},\"image\":{\"@id\":\"https:\/\/testoil.com\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/TESTOILanalysis\",\"https:\/\/x.com\/TESTOILAnalysis\",\"https:\/\/www.linkedin.com\/company\/testoil-laboratory\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"ACID NUMBER - TestOil","description":"The Acid Number test measures the level of acidity in a lubricant.\u00a0High acid levels can indicate excessive oil oxidation or depletion of the oil additives.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/","og_locale":"en_US","og_type":"article","og_title":"ACID NUMBER","og_description":"The Acid Number test measures the level of acidity in a lubricant.\u00a0High acid levels can indicate excessive oil oxidation or depletion of the oil additives.","og_url":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/","og_site_name":"TestOil","article_publisher":"https:\/\/www.facebook.com\/TESTOILanalysis","article_modified_time":"2023-12-06T18:49:59+00:00","og_image":[{"width":1024,"height":768,"url":"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_site":"@TESTOILAnalysis","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/","url":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/","name":"ACID NUMBER - TestOil","isPartOf":{"@id":"https:\/\/testoil.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#primaryimage"},"image":{"@id":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#primaryimage"},"thumbnailUrl":"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg","datePublished":"2016-01-22T16:44:01+00:00","dateModified":"2023-12-06T18:49:59+00:00","description":"The Acid Number test measures the level of acidity in a lubricant.\u00a0High acid levels can indicate excessive oil oxidation or depletion of the oil additives.","breadcrumb":{"@id":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#primaryimage","url":"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg","contentUrl":"https:\/\/testoil.com\/wp-content\/uploads\/2016\/01\/Acid-Number-e1453482888139.jpg","width":1024,"height":768,"caption":"ACID NUMBER"},{"@type":"BreadcrumbList","@id":"https:\/\/testoil.com\/services\/oil-analysis\/acid-number\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/testoil.com\/"},{"@type":"ListItem","position":2,"name":"Services","item":"https:\/\/testoil.com\/services\/"},{"@type":"ListItem","position":3,"name":"Oil Analysis","item":"https:\/\/testoil.com\/services\/oil-analysis\/"},{"@type":"ListItem","position":4,"name":"ACID NUMBER"}]},{"@type":"WebSite","@id":"https:\/\/testoil.com\/#website","url":"https:\/\/testoil.com\/","name":"TestOil","description":"Oil Analysis","publisher":{"@id":"https:\/\/testoil.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/testoil.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/testoil.com\/#organization","name":"Eurofins TestOil","url":"https:\/\/testoil.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/testoil.com\/#\/schema\/logo\/image\/","url":"https:\/\/testoil.com\/wp-content\/uploads\/2023\/02\/TestOil-01_RGB.png","contentUrl":"https:\/\/testoil.com\/wp-content\/uploads\/2023\/02\/TestOil-01_RGB.png","width":867,"height":184,"caption":"Eurofins TestOil"},"image":{"@id":"https:\/\/testoil.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/TESTOILanalysis","https:\/\/x.com\/TESTOILAnalysis","https:\/\/www.linkedin.com\/company\/testoil-laboratory"]}]}},"_links":{"self":[{"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/pages\/3517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/comments?post=3517"}],"version-history":[{"count":8,"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/pages\/3517\/revisions"}],"predecessor-version":[{"id":227365,"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/pages\/3517\/revisions\/227365"}],"up":[{"embeddable":true,"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/pages\/2057"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/media\/3486"}],"wp:attachment":[{"href":"https:\/\/testoil.com\/wp-json\/wp\/v2\/media?parent=3517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}