{"id":2469,"date":"2026-07-30T16:06:10","date_gmt":"2026-07-30T16:06:10","guid":{"rendered":"https:\/\/oldgloryaminos.com\/?page_id=2469"},"modified":"2026-07-31T01:12:59","modified_gmt":"2026-07-31T01:12:59","slug":"what-is-hplc","status":"publish","type":"page","link":"https:\/\/oldgloryaminos.com\/?page_id=2469","title":{"rendered":"What is HPLC"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2469\" class=\"elementor elementor-2469\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6d62d52 e-con e-atomic-element e-flexbox-base e-3da7701 \" data-id=\"6d62d52\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"6d62d52\" data-e-type=\"e-flexbox\" data-id=\"6d62d52\">\n    \t\t<div class=\"elementor-element elementor-element-a7b2129 elementor-hidden-desktop elementor-widget elementor-widget-template\" data-id=\"a7b2129\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"template.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-template\">\n\t\t\t\t\t<div data-elementor-type=\"page\" data-elementor-id=\"2468\" class=\"elementor elementor-2468\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t<div class=\"elementor-element elementor-element-502fcb6 e-con e-atomic-element e-flexbox-base e-502fcb6-9b410fb \" data-id=\"502fcb6\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"502fcb6\" data-e-type=\"e-flexbox\" data-id=\"502fcb6\">\n    \t\t<div class=\"elementor-element elementor-element-2ee8025 wcf-starter-animations-none elementor-widget elementor-widget-heading\" data-id=\"2ee8025\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is HPLC?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a1299c elementor-widget elementor-widget-spacer\" data-id=\"0a1299c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\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 class=\"elementor-element elementor-element-d4d3ae2 wcf-starter-animations-none elementor-widget elementor-widget-image\" data-id=\"d4d3ae2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"486\" height=\"1024\" src=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_32-AM-486x1024.png\" class=\"attachment-large size-large wp-image-2472\" alt=\"\" srcset=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_32-AM-486x1024.png 486w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_32-AM-142x300.png 142w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_32-AM-768x1619.png 768w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_32-AM-729x1536.png 729w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_32-AM.png 864w\" sizes=\"(max-width: 486px) 100vw, 486px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebbeeca elementor-widget elementor-widget-spacer\" data-id=\"ebbeeca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\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 class=\"elementor-element elementor-element-3f3f2ad wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"3f3f2ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 data-section-id=\"1dt9ad2\" data-start=\"532\" data-end=\"548\">AT A GLANCE<\/h3><p>reading time 5-6 minutes<\/p><h3 data-section-id=\"1dt9ad2\" data-start=\"532\" data-end=\"548\">You&#8217;ll Learn<\/h3><ul data-start=\"549\" data-end=\"780\"><li data-section-id=\"1uin825\" data-start=\"500\" data-end=\"555\">What High-Performance Liquid Chromatography (HPLC) is<\/li><li data-section-id=\"nhtgle\" data-start=\"556\" data-end=\"609\">Why laboratories use HPLC during analytical testing<\/li><li data-section-id=\"5fy2ua\" data-start=\"610\" data-end=\"653\">How HPLC separates compounds for analysis<\/li><li data-section-id=\"1oskidm\" data-start=\"654\" data-end=\"679\">What chromatograms show<\/li><li data-section-id=\"tg4rvr\" data-start=\"680\" data-end=\"758\">Why HPLC is considered one of the industry&#8217;s most trusted analytical methods<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd9740a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"fd9740a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e7894d wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"6e7894d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"vt5eg6\" data-start=\"787\" data-end=\"823\">Introduction<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"781\" data-end=\"1091\">When researchers review a Certificate of Analysis, one of the most common testing methods they encounter is <strong data-start=\"889\" data-end=\"938\">High-Performance Liquid Chromatography (HPLC)<\/strong>. It is widely used to evaluate the identity and purity of laboratory compounds by separating the components of a sample and measuring each individually.<\/p><p data-start=\"1093\" data-end=\"1355\">Although the technology behind HPLC is highly sophisticated, the basic concept is surprisingly straightforward. Understanding how HPLC works can make Certificates of Analysis much easier to interpret and helps explain where reported purity percentages come from.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a2e0e89 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"a2e0e89\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0eda842 wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"0eda842\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"dfghd8\" data-start=\"1437\" data-end=\"1477\">What Does HPLC Stand For?<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"1391\" data-end=\"1450\">HPLC stands for <strong data-start=\"1407\" data-end=\"1449\">High-Performance Liquid Chromatography<\/strong>.<\/p><p data-start=\"1452\" data-end=\"1752\">It is an analytical laboratory technique that separates the individual components of a mixture so they can be identified and measured. By separating compounds before measuring them, laboratories can determine how much of the desired compound is present and whether additional substances are detected.<\/p><p data-start=\"1754\" data-end=\"1840\">Rather than looking at a sample as a whole, HPLC analyzes each component individually.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b3d4d6 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4b3d4d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b18e00 wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"2b18e00\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"g7zfk3\" data-start=\"1930\" data-end=\"1968\">How Does HPLC Work?<\/h3><div class=\"TyagGW_tableContainer\"><div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"><p data-start=\"2232\" data-end=\"2332\">An HPLC system moves a liquid sample through a specialized column packed with microscopic particles.<\/p><p data-start=\"2334\" data-end=\"2500\">As the sample travels through the column, different compounds interact with the material inside at different rates. Some move quickly while others travel more slowly.<\/p><p data-start=\"2502\" data-end=\"2643\">Because they exit the column at different times, the instrument can detect each compound separately instead of measuring everything together.<\/p><p data-start=\"2645\" data-end=\"2733\">The detector records these signals and converts them into a graph called a chromatogram.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e087ab elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6e087ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4741cbb wcf-starter-animations-none elementor-widget elementor-widget-image\" data-id=\"4741cbb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-1024x683.png\" class=\"attachment-large size-large wp-image-2473\" alt=\"\" srcset=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-1024x683.png 1024w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-300x200.png 300w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-768x512.png 768w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3a2a22d elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3a2a22d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1219efd wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"1219efd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"198udna\" data-start=\"2336\" data-end=\"2345\">What is a Chromatogram?<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"3156\" data-end=\"3215\">A chromatogram is the graph produced by an HPLC instrument.<\/p><p data-start=\"3217\" data-end=\"3278\">Each peak represents a compound detected during the analysis.<\/p><p data-start=\"3280\" data-end=\"3299\">Scientists compare:<\/p><ul data-start=\"3301\" data-end=\"3383\"><li data-section-id=\"j9hyut\" data-start=\"3301\" data-end=\"3328\">The location of each peak<\/li><li data-section-id=\"1k48fx3\" data-start=\"3329\" data-end=\"3354\">The height of each peak<\/li><li data-section-id=\"nzwbtz\" data-start=\"3355\" data-end=\"3383\">The area beneath each peak<\/li><\/ul><p data-start=\"3385\" data-end=\"3534\">The largest peak is often associated with the primary compound, while much smaller peaks may represent trace impurities or other detected substances.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74a8fc5 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"74a8fc5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ea08cd wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"3ea08cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"162r0wv\" data-start=\"3171\" data-end=\"3181\">Why is HPLC Used for Purity Testing?<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"3898\" data-end=\"4005\">Because HPLC separates compounds before measuring them, it provides highly detailed analytical information.<\/p><p data-start=\"4007\" data-end=\"4108\">Instead of estimating purity, the instrument measures how much of each detected component is present.<\/p><p data-start=\"4110\" data-end=\"4228\">This makes HPLC one of the most widely accepted analytical techniques for determining purity in research laboratories.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3408504 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3408504\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a6f65ce wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"a6f65ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"qwfnbe\" data-start=\"3485\" data-end=\"3510\">Key Takeaways<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"4611\" data-end=\"4723\">HPLC is one of the most commonly used analytical methods in laboratory research because it allows scientists to:<\/p><ul data-start=\"4725\" data-end=\"4961\"><li data-section-id=\"x1ygn1\" data-start=\"4725\" data-end=\"4761\">Separate compounds within a sample<\/li><li data-section-id=\"1x1l7bs\" data-start=\"4762\" data-end=\"4809\">Measure the relative amount of each component<\/li><li data-section-id=\"1l19u8p\" data-start=\"4810\" data-end=\"4853\">Generate chromatograms for interpretation<\/li><li data-section-id=\"1dyebjg\" data-start=\"4854\" data-end=\"4892\">Determine purity with high precision<\/li><li data-section-id=\"13sik2q\" data-start=\"4893\" data-end=\"4961\">Support the analytical data presented on a Certificate of Analysis<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14444a4 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"14444a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\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\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-db2c41f wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"db2c41f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"cfncyk\" data-start=\"5075\" data-end=\"5098\">Research Disclaimer<\/h3><p data-start=\"5100\" data-end=\"5419\">The information provided in this guide is intended solely for educational and research purposes. It is designed to help readers understand common laboratory analytical terminology and should not be interpreted as medical advice or as a statement regarding the safety, efficacy, or intended use of any research material.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-5b0b0e7 e-con e-atomic-element e-flexbox-base e-5b0b0e7-5200265 \" data-id=\"5b0b0e7\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"5b0b0e7\" data-e-type=\"e-flexbox\" data-id=\"5b0b0e7\">\n    <div class=\"elementor-element elementor-element-6a4f8f6 e-con e-atomic-element e-flexbox-base e-6a4f8f6-9a35e9b \" data-id=\"6a4f8f6\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"6a4f8f6\" data-e-type=\"e-flexbox\" data-id=\"6a4f8f6\">\n    \t\t<div class=\"elementor-element elementor-element-4bb9208 elementor-hidden-tablet elementor-hidden-mobile wcf-starter-animations-none elementor-widget elementor-widget-heading\" data-id=\"4bb9208\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is HPLC?<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a2fb347 e-con-full elementor-hidden-tablet elementor-hidden-mobile e-flex wcf-starter-animations-none e-con e-parent\" data-id=\"a2fb347\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-b9d9ec8 e-con-full e-flex wcf-starter-animations-none e-con e-child\" data-id=\"b9d9ec8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e2e665b wcf-starter-animations-none elementor-widget elementor-widget-heading\" data-id=\"e2e665b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">At a Glance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c3beadf wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"c3beadf\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Reading Time: 5-6 minutes<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3616407 wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"3616407\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 data-section-id=\"1dt9ad2\" data-start=\"532\" data-end=\"548\">You&#8217;ll Learn<\/h3><ul data-start=\"549\" data-end=\"780\"><li data-section-id=\"1uin825\" data-start=\"500\" data-end=\"555\">What High-Performance Liquid Chromatography (HPLC) is<\/li><li data-section-id=\"nhtgle\" data-start=\"556\" data-end=\"609\">Why laboratories use HPLC during analytical testing<\/li><li data-section-id=\"5fy2ua\" data-start=\"610\" data-end=\"653\">How HPLC separates compounds for analysis<\/li><li data-section-id=\"1oskidm\" data-start=\"654\" data-end=\"679\">What chromatograms show<\/li><li data-section-id=\"tg4rvr\" data-start=\"680\" data-end=\"758\">Why HPLC is considered one of the industry&#8217;s most trusted analytical methods<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fb634fe elementor-hidden-tablet elementor-hidden-mobile wcf-starter-animations-none elementor-widget elementor-widget-image\" data-id=\"fb634fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_16-AM.png\" class=\"attachment-full size-full wp-image-2471\" alt=\"\" srcset=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_16-AM.png 1536w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_16-AM-300x200.png 300w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_16-AM-1024x683.png 1024w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-08_57_16-AM-768x512.png 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\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<div class=\"elementor-element elementor-element-8303972 e-con-full elementor-hidden-tablet elementor-hidden-mobile e-flex wcf-starter-animations-none e-con e-parent\" data-id=\"8303972\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8dad967 elementor-widget__width-initial wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"8dad967\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"vt5eg6\" data-start=\"787\" data-end=\"823\">Introduction<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"781\" data-end=\"1091\">When researchers review a Certificate of Analysis, one of the most common testing methods they encounter is <strong data-start=\"889\" data-end=\"938\">High-Performance Liquid Chromatography (HPLC)<\/strong>. It is widely used to evaluate the identity and purity of laboratory compounds by separating the components of a sample and measuring each individually.<\/p><p data-start=\"1093\" data-end=\"1355\">Although the technology behind HPLC is highly sophisticated, the basic concept is surprisingly straightforward. Understanding how HPLC works can make Certificates of Analysis much easier to interpret and helps explain where reported purity percentages come from.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-97ff196 elementor-widget__width-initial wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"97ff196\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"dfghd8\" data-start=\"1437\" data-end=\"1477\">What Does HPLC Stand For?<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"1391\" data-end=\"1450\">HPLC stands for <strong data-start=\"1407\" data-end=\"1449\">High-Performance Liquid Chromatography<\/strong>.<\/p><p data-start=\"1452\" data-end=\"1752\">It is an analytical laboratory technique that separates the individual components of a mixture so they can be identified and measured. By separating compounds before measuring them, laboratories can determine how much of the desired compound is present and whether additional substances are detected.<\/p><p data-start=\"1754\" data-end=\"1840\">Rather than looking at a sample as a whole, HPLC analyzes each component individually.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4dd829f e-con-full elementor-hidden-tablet elementor-hidden-mobile e-flex wcf-starter-animations-none e-con e-parent\" data-id=\"4dd829f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-68f6bd4 elementor-widget__width-initial wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"68f6bd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"g7zfk3\" data-start=\"1930\" data-end=\"1968\">How Does HPLC Work?<\/h3><div class=\"TyagGW_tableContainer\"><div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"><p data-start=\"2232\" data-end=\"2332\">An HPLC system moves a liquid sample through a specialized column packed with microscopic particles.<\/p><p data-start=\"2334\" data-end=\"2500\">As the sample travels through the column, different compounds interact with the material inside at different rates. Some move quickly while others travel more slowly.<\/p><p data-start=\"2502\" data-end=\"2643\">Because they exit the column at different times, the instrument can detect each compound separately instead of measuring everything together.<\/p><p data-start=\"2645\" data-end=\"2733\">The detector records these signals and converts them into a graph called a chromatogram.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1fe42da e-con-full elementor-hidden-tablet elementor-hidden-mobile e-flex wcf-starter-animations-none e-con e-parent\" data-id=\"1fe42da\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-50aa214 wcf-starter-animations-none elementor-widget elementor-widget-image\" data-id=\"50aa214\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-1024x683.png\" class=\"attachment-large size-large wp-image-2473\" alt=\"\" srcset=\"https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-1024x683.png 1024w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-300x200.png 300w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM-768x512.png 768w, https:\/\/oldgloryaminos.com\/wp-content\/uploads\/2026\/07\/ChatGPT-Image-Jul-30-2026-09_02_41-AM.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe14eea elementor-widget__width-initial wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"fe14eea\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"198udna\" data-start=\"2336\" data-end=\"2345\">What is a Chromatogram?<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"3156\" data-end=\"3215\">A chromatogram is the graph produced by an HPLC instrument.<\/p><p data-start=\"3217\" data-end=\"3278\">Each peak represents a compound detected during the analysis.<\/p><p data-start=\"3280\" data-end=\"3299\">Scientists compare:<\/p><ul data-start=\"3301\" data-end=\"3383\"><li data-section-id=\"j9hyut\" data-start=\"3301\" data-end=\"3328\">The location of each peak<\/li><li data-section-id=\"1k48fx3\" data-start=\"3329\" data-end=\"3354\">The height of each peak<\/li><li data-section-id=\"nzwbtz\" data-start=\"3355\" data-end=\"3383\">The area beneath each peak<\/li><\/ul><p data-start=\"3385\" data-end=\"3534\">The largest peak is often associated with the primary compound, while much smaller peaks may represent trace impurities or other detected substances.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0671886 e-con-full elementor-hidden-tablet elementor-hidden-mobile e-flex wcf-starter-animations-none e-con e-parent\" data-id=\"0671886\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ba5d952 elementor-widget__width-initial wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"ba5d952\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"162r0wv\" data-start=\"3171\" data-end=\"3181\">Why is HPLC Used for Purity Testing?<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"3898\" data-end=\"4005\">Because HPLC separates compounds before measuring them, it provides highly detailed analytical information.<\/p><p data-start=\"4007\" data-end=\"4108\">Instead of estimating purity, the instrument measures how much of each detected component is present.<\/p><p data-start=\"4110\" data-end=\"4228\">This makes HPLC one of the most widely accepted analytical techniques for determining purity in research laboratories.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f1775b elementor-widget__width-initial wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"9f1775b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"qwfnbe\" data-start=\"3485\" data-end=\"3510\">Key Takeaways<\/h3><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"4611\" data-end=\"4723\">HPLC is one of the most commonly used analytical methods in laboratory research because it allows scientists to:<\/p><ul data-start=\"4725\" data-end=\"4961\"><li data-section-id=\"x1ygn1\" data-start=\"4725\" data-end=\"4761\">Separate compounds within a sample<\/li><li data-section-id=\"1x1l7bs\" data-start=\"4762\" data-end=\"4809\">Measure the relative amount of each component<\/li><li data-section-id=\"1l19u8p\" data-start=\"4810\" data-end=\"4853\">Generate chromatograms for interpretation<\/li><li data-section-id=\"1dyebjg\" data-start=\"4854\" data-end=\"4892\">Determine purity with high precision<\/li><li data-section-id=\"13sik2q\" data-start=\"4893\" data-end=\"4961\">Support the analytical data presented on a Certificate of Analysis<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54ab01d elementor-hidden-tablet elementor-hidden-mobile wcf-starter-animations-none elementor-widget elementor-widget-text-editor\" data-id=\"54ab01d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wcf_starter_animations&quot;:&quot;none&quot;,&quot;wcf_anim_duration&quot;:1000,&quot;wcf_anim_delay&quot;:0,&quot;wcf_anim_ease&quot;:&quot;ease&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"cfncyk\" data-start=\"5075\" data-end=\"5098\">Research Disclaimer<\/h3><p data-start=\"5100\" data-end=\"5419\">The information provided in this guide is intended solely for educational and research purposes. It is designed to help readers understand common laboratory analytical terminology and should not be interpreted as medical advice or as a statement regarding the safety, efficacy, or intended use of any research material.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What is HPLC? At a Glance Reading Time: 5-6 minutes You&#8217;ll Learn What High-Performance Liquid Chromatography (HPLC) is Why laboratories use HPLC during analytical testing How HPLC separates compounds for analysis What chromatograms show Why HPLC is considered one of the industry&#8217;s most trusted analytical methods Introduction When researchers review a Certificate of Analysis, one [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-2469","page","type-page","status-publish","hentry"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=\/wp\/v2\/pages\/2469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2469"}],"version-history":[{"count":19,"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=\/wp\/v2\/pages\/2469\/revisions"}],"predecessor-version":[{"id":2663,"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=\/wp\/v2\/pages\/2469\/revisions\/2663"}],"wp:attachment":[{"href":"https:\/\/oldgloryaminos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}