{"id":2113,"date":"2025-05-19T06:56:54","date_gmt":"2025-05-19T06:56:54","guid":{"rendered":"https:\/\/www.pharmacopoeiatest.com\/?p=2113"},"modified":"2025-05-19T06:56:55","modified_gmt":"2025-05-19T06:56:55","slug":"iso-719","status":"publish","type":"post","link":"https:\/\/www.pharmacopoeiatest.com\/th\/iso-719\/","title":{"rendered":"ISO 719 hydrolytic resistance test"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2113\" class=\"elementor elementor-2113\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4988115 e-con-full e-flex e-con e-parent\" data-id=\"4988115\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c93f403 elementor-widget elementor-widget-heading\" data-id=\"c93f403\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Glass Hydrolytic Resistance Test<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e3a357 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3e3a357\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a33850a elementor-widget elementor-widget-heading\" data-id=\"a33850a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ISO 719<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b4b8445 e-flex e-con-boxed e-con e-parent\" data-id=\"b4b8445\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f9b946 elementor-widget elementor-widget-heading\" data-id=\"3f9b946\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Hydrolytic Resistance Test & ISO 719 Sample Preparation for Glass<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2621e7 elementor-widget elementor-widget-text-editor\" data-id=\"b2621e7\" 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<p>In the world of glass quality control, the <strong data-start=\"480\" data-end=\"510\">hydrolytic resistance test<\/strong> defined by <strong data-start=\"522\" data-end=\"533\">ISO 719<\/strong> plays a critical role. This <strong data-start=\"562\" data-end=\"591\">hydrolytic test for glass<\/strong> evaluates how much alkali leaches from glass grains when boiled in purified water at 98 \u00b0C. To achieve reliable and reproducible results, proper <strong data-start=\"737\" data-end=\"767\">ISO 719 sample preparation<\/strong> and adherence to method details ensure your classification of glass durability stands up to scrutiny. Below, you\u2019ll find everything you need to guide your next <strong data-start=\"928\" data-end=\"983\">glass hydrolytic resistance test sample preparation<\/strong> and testing campaign.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59f5e18 elementor-widget elementor-widget-heading\" data-id=\"59f5e18\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Scope & Classification<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85a80ac elementor-widget elementor-widget-text-editor\" data-id=\"85a80ac\" 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<p class=\"\" data-start=\"1036\" data-end=\"1438\">ISO 719 specifies a method to determine the hydrolytic resistance of soda-lime and similar less-resistant glasses. By extracting a known mass of 300\u2013500 \u00b5m glass grains in carbon-dioxide-free water for 60 minutes at 98 \u00b0C, the test measures the <strong data-start=\"1281\" data-end=\"1299\">volume of acid<\/strong> needed to titrate released alkali. You can express results as sodium-oxide equivalents, then classify glass according to ISO 719 limits.<\/p><ul><li data-start=\"1441\" data-end=\"1577\"><strong data-start=\"1441\" data-end=\"1466\">Classification levels<\/strong> range from very low resistance (HGA 1) to moderate resistance (HGA 3), enabling informed material selection.<\/li><li data-start=\"1580\" data-end=\"1670\">Remember: ISO 719 classifications differ from ISO 720. Always cite which standard applies.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-929f6d2 elementor-widget elementor-widget-heading\" data-id=\"929f6d2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Test Principle & Procedure<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a0ef16 elementor-widget elementor-widget-text-editor\" data-id=\"9a0ef16\" 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<ol><li data-start=\"1708\" data-end=\"1730\"><strong data-start=\"1708\" data-end=\"1728\">Weigh &amp; Transfer<\/strong><\/li><\/ol><ul><li style=\"list-style-type: none;\"><ul><li data-start=\"1736\" data-end=\"1829\">Accurately weigh 2.00 g of dried, sieved glass grains into each of three volumetric flasks.<\/li><li data-start=\"1835\" data-end=\"1923\">Prepare two additional flasks: one as a blank reference, one as a temperature control.<\/li><\/ul><\/li><\/ul><ol><li class=\"\" data-start=\"1925\" data-end=\"2221\"><p class=\"\" data-start=\"1928\" data-end=\"1944\"><strong data-start=\"1928\" data-end=\"1942\">Extraction<\/strong><\/p><\/li><\/ol><ul><li style=\"list-style-type: none;\"><ul><li data-start=\"1950\" data-end=\"2038\">Fill flasks to the mark with <strong data-start=\"1979\" data-end=\"1996\">grade 2 water<\/strong> (conductivity \u2264 1 \u00b5S\/cm, pH 5.5 \u00b1 0.1).<\/li><li data-start=\"2044\" data-end=\"2123\">Heat in a boiling bath to reach 98 \u00b0C within 60 minutes, hold for 60 minutes.<\/li><li data-start=\"2129\" data-end=\"2221\">Cool rapidly under running water to avoid thermal shock, then bring volume back to the mark.<\/li><\/ul><\/li><\/ul><ol><li data-start=\"2226\" data-end=\"2241\"><strong data-start=\"2226\" data-end=\"2239\">Titration<\/strong><\/li><\/ol><ul><li style=\"list-style-type: none;\"><ul><li data-start=\"2247\" data-end=\"2338\">Pipette 25 mL of supernatant into a conical flask, add two drops of methyl red indicator.<\/li><li data-start=\"2344\" data-end=\"2428\">Titrate against 0.01 mol\/L HCl until the methyl red endpoint (orange-red) appears.<\/li><li data-start=\"2434\" data-end=\"2514\">Calculate the volume of acid consumed to classify according to ISO 719 criteria.<\/li><\/ul><\/li><\/ul><blockquote data-start=\"2516\" data-end=\"2614\"><p class=\"\" data-start=\"2518\" data-end=\"2614\"><strong data-start=\"2518\" data-end=\"2530\">Pro Tip:<\/strong> Conduct all titrations within 1 hour of cooling to minimize carbonate reabsorption.<\/p><\/blockquote>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c19164 elementor-widget elementor-widget-heading\" data-id=\"2c19164\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Essential Equipment & Reagents<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da0805c elementor-widget elementor-widget-text-editor\" data-id=\"da0805c\" 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<ul><li data-start=\"2655\" data-end=\"2779\"><strong data-start=\"2655\" data-end=\"2669\">Test water<\/strong>: Prepare carbon-dioxide-free grade 2 water by multiple distillations; confirm pH 5.5 \u00b1 0.1 with methyl red.<\/li><li data-start=\"2782\" data-end=\"2903\"><strong data-start=\"2782\" data-end=\"2803\">Flasks &amp; Burettes<\/strong>: Use Class A volumetric flasks and burettes made of HGA 1 glass to avoid leaching from apparatus.<\/li><li data-start=\"2906\" data-end=\"3018\"><strong data-start=\"2906\" data-end=\"2928\">Sieving &amp; Grinding<\/strong>: Employ 300 \u00b5m and 500 \u00b5m sieves for grain sizing\u2014use a ball mill or mortar and pestle.<\/li><li data-start=\"3021\" data-end=\"3134\"><strong data-start=\"3021\" data-end=\"3051\">Heating Bath &amp; Thermometer<\/strong>: Maintain precise 98 \u00b0C \u00b1 0.2 \u00b0C control to ensure consistent hydrolytic attack.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b3771dc elementor-widget elementor-widget-heading\" data-id=\"b3771dc\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Tips for Accurate ISO 719 Testing<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dec1822 elementor-widget elementor-widget-text-editor\" data-id=\"dec1822\" 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<ul><li data-start=\"3178\" data-end=\"3282\"><strong data-start=\"3178\" data-end=\"3188\">Drying<\/strong>: Dry grains at 140 \u00b0C for 20 minutes, then cool in a desiccator to prevent moisture uptake.<\/li><li data-start=\"3285\" data-end=\"3404\"><strong data-start=\"3285\" data-end=\"3308\">Cross-Contamination<\/strong>: Pretreat flasks and burettes by acid-washing and heating to eliminate residual alkali signs.<\/li><li data-start=\"3407\" data-end=\"3519\"><strong data-start=\"3407\" data-end=\"3424\">Repeatability<\/strong>: Run all samples in triplicate and include blank references to detect any systematic errors.<\/li><li data-start=\"3522\" data-end=\"3648\"><strong data-start=\"3522\" data-end=\"3539\">Documentation<\/strong>: Record batch numbers, grain density (target 2.4 g\/cm\u00b3 \u00b1 0.2), and exact titration volumes for traceability.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d5352a elementor-widget elementor-widget-heading\" data-id=\"5d5352a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Equipment Recommendation<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-21b1822 e-con-full e-flex e-con e-child\" data-id=\"21b1822\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-da6a3f7 elementor-widget elementor-widget-text-editor\" data-id=\"da6a3f7\" 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<p class=\"\" data-start=\"3681\" data-end=\"3867\">For seamless and <strong data-start=\"3698\" data-end=\"3738\">automated ISO 719 sample preparation<\/strong> and sample handling, we recommend the <strong data-start=\"3777\" data-end=\"3829\">GHR-01A Glass Grain Hydrolytic Resistance Tester<\/strong> from Cell Instruments. This system:<\/p><ul><li data-start=\"3870\" data-end=\"3952\"><strong data-start=\"3870\" data-end=\"3892\">Automates crushing<\/strong> and vibration sieving to yield uniform 300\u2013500 \u00b5m grains.<\/li><li data-start=\"3955\" data-end=\"4038\">Features an HMI interface for one-touch operation of grinding and sieving cycles.<\/li><li data-start=\"4041\" data-end=\"4113\">Improves safety through enclosed sample chambers and waste collection.<\/li><li data-start=\"4116\" data-end=\"4212\"><strong data-start=\"4116\" data-end=\"4136\">Boosts precision<\/strong> by minimizing manual handling errors and ensuring repeatable sample sizing.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70ee2ca elementor-widget elementor-widget-image\" data-id=\"70ee2ca\" 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<a href=\"https:\/\/www.pharmacopoeiatest.com\/th\/understanding-hydrolytic-resistance-in-glass-containers\/\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.pharmacopoeiatest.com\/wp-content\/uploads\/2024\/04\/Glass-Grain-Hydrolytic-Resistance-Sampler.jpg\" class=\"attachment-full size-full wp-image-1614\" alt=\"ISO 719 Glass Grain Hydrolytic Resistance Sampler\" srcset=\"https:\/\/www.pharmacopoeiatest.com\/wp-content\/uploads\/2024\/04\/Glass-Grain-Hydrolytic-Resistance-Sampler.jpg 1000w, https:\/\/www.pharmacopoeiatest.com\/wp-content\/uploads\/2024\/04\/Glass-Grain-Hydrolytic-Resistance-Sampler-300x300.jpg 300w, https:\/\/www.pharmacopoeiatest.com\/wp-content\/uploads\/2024\/04\/Glass-Grain-Hydrolytic-Resistance-Sampler-150x150.jpg 150w, https:\/\/www.pharmacopoeiatest.com\/wp-content\/uploads\/2024\/04\/Glass-Grain-Hydrolytic-Resistance-Sampler-768x768.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\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<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-954f125 elementor-widget elementor-widget-text-editor\" data-id=\"954f125\" 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<p>Implementing the <a href=\"https:\/\/www.iso.org\/standard\/77843.html\" target=\"_blank\" rel=\"noopener\">ISO 719<\/a> standard correctly safeguards your glass packaging and material performance. By following this guide on <strong data-start=\"4360\" data-end=\"4390\">hydrolytic resistance test<\/strong> procedures, <strong data-start=\"4403\" data-end=\"4433\">iso 719 sample preparation<\/strong>, and precise titration methods, you\u2019ll classify glass grades confidently. Leverage Cell Instruments\u2019 advanced GHR-01A tester to streamline your workflow, reduce variability, and uphold the highest quality standards in glass hydrolytic resistance testing.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Glass Hydrolytic Resistance Test ISO 719 Hydrolytic Resistance Test &#038; ISO 719 Sample Preparation for Glass In the world of glass quality control, the hydrolytic resistance test defined by ISO 719 plays a critical role. This hydrolytic test for glass evaluates how much alkali leaches from glass grains when boiled in purified water at 98 [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[26],"tags":[],"class_list":["post-2113","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"pharmacopoeiatest","author_link":"https:\/\/www.pharmacopoeiatest.com\/th\/author\/pharmacopoeiatest\/"},"uagb_comment_info":0,"uagb_excerpt":"Glass Hydrolytic Resistance Test ISO 719 Hydrolytic Resistance Test &#038; ISO 719 Sample Preparation for Glass In the world of glass quality control, the hydrolytic resistance test defined by ISO 719 plays a critical role. This hydrolytic test for glass evaluates how much alkali leaches from glass grains when boiled in purified water at 98&hellip;","_links":{"self":[{"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/posts\/2113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/comments?post=2113"}],"version-history":[{"count":5,"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/posts\/2113\/revisions"}],"predecessor-version":[{"id":2122,"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/posts\/2113\/revisions\/2122"}],"wp:attachment":[{"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/media?parent=2113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/categories?post=2113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pharmacopoeiatest.com\/th\/wp-json\/wp\/v2\/tags?post=2113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}