{"id":13018,"date":"2026-01-20T15:47:19","date_gmt":"2026-01-20T14:47:19","guid":{"rendered":"https:\/\/www.glowingpeptides.com\/3-quality-analytics\/"},"modified":"2026-03-27T18:41:15","modified_gmt":"2026-03-27T17:41:15","slug":"3-quality-analytics","status":"publish","type":"page","link":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/","title":{"rendered":"3. Quality &amp; analytics"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"13018\" class=\"elementor elementor-13018 elementor-10627\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"wd-negative-gap elementor-section elementor-top-section elementor-element elementor-element-5f0e3d6 wd-section-stretch elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5f0e3d6\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4e7dc1e9\" data-id=\"4e7dc1e9\" data-element_type=\"column\" data-e-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-637581a8 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"637581a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-white wd-title-style-default wd-title-size-extra-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h1 class=\"woodmart-title-container title wd-fontsize-xxxl\">Quality &amp; Analytics - <br \/>\nWhy detection is crucial for peptides<\/h1> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15d8490 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"15d8490\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>In the case of peptides as research reagents, quality is not an abstract concept, but a measurable and documented property.  <br>Analytical evidence creates transparency about what is actually being investigated and forms the basis for reproducible results.  <br>Without clear analytics, tests can neither be reliably compared nor correctly interpreted.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<section class=\"wd-negative-gap elementor-section elementor-inner-section elementor-element elementor-element-7c38811 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7c38811\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-bcb1d0f\" data-id=\"bcb1d0f\" data-element_type=\"column\" data-e-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-4a7be8f checklist white big color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"4a7be8f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Identity and composition must be traceable<\/li><li>Purity directly influences measurement results<\/li><li>By-products can distort effects<\/li><\/ul>\t\t\t\t\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-inner-column elementor-element elementor-element-d260e20\" data-id=\"d260e20\" data-element_type=\"column\" data-e-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-50c8776 checklist white big color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"50c8776\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Analytics creates comparability between batches<\/li><li>Documents support responsible handling<\/li><li>Evidence is part of good scientific practice<\/li><\/ul>\t\t\t\t\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 class=\"elementor-element elementor-element-3d22790 color-scheme-inherit text-left elementor-widget elementor-widget-text-editor\" data-id=\"3d22790\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>In the case of peptides as research reagents, quality is not an abstract concept, but a measurable and documented property.  <br>Analytical evidence creates transparency about what is actually being investigated and forms the basis for reproducible results.  <br>Without clear analytics, tests can neither be reliably compared nor correctly interpreted.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-18cfa2a0 elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"18cfa2a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-bordered btn-shape-round btn-size-default btn-color-white btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/contact-us\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tContact us\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-261b0e8c elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"261b0e8c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-white btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\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<section class=\"wd-negative-gap elementor-section elementor-top-section elementor-element elementor-element-39dd590 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"39dd590\" data-element_type=\"section\" data-e-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-a5c5fdf\" data-id=\"a5c5fdf\" data-element_type=\"column\" data-e-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-4b24dba wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"4b24dba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-xxl\">What does \"purity\" really mean for peptides?<br \/>\n<\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-237c8f9 elementor-widget elementor-widget-wd_text_block\" data-id=\"237c8f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-center\">\n\t\t\t\n\t\t\t<p>The term purity is often used in a shortened form, but in practice it describes several aspects at the same time. It refers not only to the proportion of the desired sequence, but also to the ratio of by-products, residues and modified variants. This differentiation is crucial for the interpretation of results.  <\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40cb5a5 checklist cards five-col accent-bg elementor-widget elementor-widget-wd_text_block\" data-id=\"40cb5a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<ul><li><strong>Sequence purity:<\/strong> Proportion of the correct amino acid sequence in the total material.<\/li><li><strong>By-products:<\/strong> Incompletely synthesized or concatenated fragments may be present.<\/li><li><strong>Modifications:<\/strong> Oxidations or deamidations change properties unnoticed.<\/li><li><strong>Residual substances:<\/strong> Solvents, protective groups or reagents influence measurements.<\/li><li><strong>Analytical method:<\/strong> The measured purity value depends on the technique used.<\/li><\/ul>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cce45e2 elementor-widget elementor-widget-wd_text_block\" data-id=\"cce45e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-center\">\n\t\t\t\n\t\t\t<section><section><p>A purity value must therefore always be considered in the context of the analytics used. A realistic picture of the actual quality of a peptide only emerges in combination with other evidence. <\/p><\/section><section><\/section><\/section><section><\/section>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-044b4e9 elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"044b4e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-primary btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\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<div class=\"wd-negative-gap elementor-element elementor-element-12bb92e wd-section-stretch e-flex e-con-boxed e-con e-parent\" data-id=\"12bb92e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-e50f7fb e-con-full e-flex e-con e-child\" data-id=\"e50f7fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d173fa5 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"d173fa5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-xxl\">Certificate of Analysis (COA): Content, significance and limits  <\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9b7410c checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"9b7410c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p>The Certificate of Analysis is one of the central documents for the quality assessment of peptides. It summarizes the most important analytical results of a specific batch and makes it possible to check properties in a comprehensible manner. A COA serves as a reference, but does not replace an independent evaluation of the data.  <\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f99b2eb e-con-full e-flex e-con e-child\" data-id=\"f99b2eb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-bccba2d e-con-full e-flex e-con e-child\" data-id=\"bccba2d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39229f2 elementor-widget elementor-widget-wd_image_or_svg\" data-id=\"39229f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_image_or_svg.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"wd-image text-left\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"674\" src=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe.webp\" class=\"attachment-full size-full\" alt=\"GlowingPeptides-Ampullen stehen in einer Reihe\" srcset=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe.webp 1024w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe-300x197.webp 300w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe-768x506.webp 768w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe-148x97.webp 148w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-94acab7 e-con-full e-flex e-con e-child\" data-id=\"94acab7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47f6e65 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"47f6e65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<ul><li><strong>Batch reference:<\/strong> A COA is only ever valid for a specific production batch.<\/li><li><strong>Identity information:<\/strong> Contains sequence, molecular weight and basic characteristics.<\/li><li><strong>Purity value:<\/strong> Indicates the analytically determined proportion of the target sequence.<\/li><li><strong>Method information:<\/strong> Describes the analysis used to determine the values.<\/li><li><strong>Tolerances:<\/strong> Measurement results are subject to method-related fluctuations.<\/li><li><strong>Limits:<\/strong> Not every COA detects all possible contaminants.<\/li><\/ul>\n\t\t\t\t\t<\/div>\n\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>\n\t\t<div class=\"elementor-element elementor-element-d5d075e e-con-full e-flex e-con e-child\" data-id=\"d5d075e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d224d23 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"d224d23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<section><p>A COA should always be considered in conjunction with other analysis data. This is the only way to assess the significance of the reported values for the respective experiment. <\/p><\/section>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22d17a4 elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"22d17a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-primary btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\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<div class=\"wd-negative-gap elementor-element elementor-element-fd950fe wd-section-stretch e-flex e-con-boxed e-con e-parent\" data-id=\"fd950fe\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-9ab9744 e-con-full e-flex e-con e-child\" data-id=\"9ab9744\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40aca24 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"40aca24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h2 class=\"woodmart-title-container title wd-fontsize-xxl\">HPLC: Separation method, interpretation and typical errors  <\/h2> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-61bebf7 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"61bebf7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left color-scheme-light\">\n\t\t\t\n\t\t\t<p>High-performance liquid chromatography is one of the most important methods for assessing the purity of peptides. It separates components of a sample based on their interactions with the stationary phase and provides a chromatographic profile that allows conclusions to be drawn about composition and quality. <\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3e7c5e3 e-con-full e-flex e-con e-child\" data-id=\"3e7c5e3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-fa093b4 e-con-full e-flex e-con e-child\" data-id=\"fa093b4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dcbdda3 elementor-widget elementor-widget-wd_image_or_svg\" data-id=\"dcbdda3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_image_or_svg.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"wd-image text-left\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"674\" src=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h_0000_adb_1540367684.webp\" class=\"attachment-full size-full\" alt=\"Molek\u00fclstruktur-Darstellung eines Peptids\" srcset=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h_0000_adb_1540367684.webp 1024w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h_0000_adb_1540367684-300x197.webp 300w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h_0000_adb_1540367684-768x506.webp 768w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h_0000_adb_1540367684-148x97.webp 148w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-321f642 e-con-full e-flex e-con e-child\" data-id=\"321f642\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1576fff checklist white elementor-widget elementor-widget-wd_text_block\" data-id=\"1576fff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left color-scheme-light\">\n\t\t\t\n\t\t\t<ul><li><strong>Separation principle:<\/strong> Different retention times indicate different components.<\/li><li><strong>Peak interpretation:<\/strong> The area of the peaks is used to estimate the purity.<\/li><li><strong>Choice of method:<\/strong> Column type, eluent and gradient influence the result.<\/li><li><strong>Detection:<\/strong> UV or other detectors determine which substances are visible.<\/li><li><strong>Comparability:<\/strong> Only identical methods provide comparable chromatograms.<\/li><li><strong>Sources of error:<\/strong> Overlapping peaks or unsuitable methods can overestimate purity.<\/li><\/ul>\n\t\t\t\t\t<\/div>\n\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>\n\t\t<div class=\"elementor-element elementor-element-453c2cc e-con-full e-flex e-con e-child\" data-id=\"453c2cc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f50d2d4 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"f50d2d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left color-scheme-light\">\n\t\t\t\n\t\t\t<section><section><p>A single HPLC value should therefore never be considered in isolation. Only the combination with other analyses enables a well-founded quality assessment. <\/p><\/section><section><\/section><\/section>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb2aa41 elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"bb2aa41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-white btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\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<div class=\"wd-negative-gap elementor-element elementor-element-1b85772 wd-section-stretch e-flex e-con-boxed e-con e-parent\" data-id=\"1b85772\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-7de93d1 e-con-full e-flex e-con e-child\" data-id=\"7de93d1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dba3857 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"dba3857\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-xxl\">Mass spectrometry (MS): Identity detection and sequence confirmation<br \/>\n<\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4561d4c e-con-full e-flex e-con e-child\" data-id=\"4561d4c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-3c5cf3f e-con-full e-flex e-con e-child\" data-id=\"3c5cf3f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a5b96a3 elementor-widget elementor-widget-wd_image_or_svg\" data-id=\"a5b96a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_image_or_svg.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"wd-image text-left\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"674\" src=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe.webp\" class=\"attachment-full size-full\" alt=\"GlowingPeptides-Ampullen stehen in einer Reihe\" srcset=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe.webp 1024w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe-300x197.webp 300w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe-768x506.webp 768w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gb-img-h-glowingpeptides-ampullen_reihe-148x97.webp 148w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bb0c580 e-con-full e-flex e-con e-child\" data-id=\"bb0c580\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8de0c98 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"8de0c98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p>Mass spectrometry is primarily used to confirm the identity of a peptide. It measures the mass of the molecules and thus enables comparison with the theoretical molecular weight of the target sequence. Deviations provide indications of modifications or by-products.  <\/p><p>Compared to HPLC, MS focuses less on separation and more on clear assignment. By detecting characteristic masses, it is possible to check whether the desired sequence is actually present. <\/p><p>Here too, the significance depends on the method selected and the sample preparation. MS complements other analytical methods and completes the overall picture of the quality of a peptide. <\/p>\n\t\t\t\t\t<\/div>\n\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>\n\t\t<div class=\"elementor-element elementor-element-dafee09 e-con-full e-flex e-con e-child\" data-id=\"dafee09\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1bd5b2f elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"1bd5b2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-primary btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\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<div class=\"wd-negative-gap elementor-element elementor-element-2941e44 e-flex e-con-boxed e-con e-parent\" data-id=\"2941e44\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-7d99506 e-con-full e-flex e-con e-child\" data-id=\"7d99506\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-307cc6b wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"307cc6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-large text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-xxl\">Safety data sheet (SDS): purpose, mandatory information and responsibility<br \/>\n<\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b83be8 elementor-widget elementor-widget-wd_text_block\" data-id=\"0b83be8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p>The safety data sheet is a central document for the responsible handling of peptides in the laboratory. It is not used to evaluate efficacy, but provides information on hazards, protective measures and proper handling. For research reagents, the SDS is an essential part of the safety and compliance documentation.  <\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f84bbd5 e-con-full e-flex e-con e-child\" data-id=\"f84bbd5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-8b4569b e-con-full e-flex e-con e-child\" data-id=\"8b4569b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-890ff3d elementor-widget elementor-widget-wd_image_or_svg\" data-id=\"890ff3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_image_or_svg.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"wd-image text-left\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"674\" src=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0003_adb_1623055905.webp\" class=\"attachment-full size-full\" alt=\"Blick auf einen Laborschrank mit gl\u00e4sernen T\u00fcren\" srcset=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0003_adb_1623055905.webp 1024w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0003_adb_1623055905-300x197.webp 300w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0003_adb_1623055905-768x506.webp 768w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0003_adb_1623055905-148x97.webp 148w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4cfedd1 e-con-full e-flex e-con e-child\" data-id=\"4cfedd1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-49f766e checklist elementor-widget elementor-widget-wd_text_block\" data-id=\"49f766e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<ul><li>Information on possible hazardous properties<\/li><li>Notes on safe handling and storage<\/li><li>Recommended protective measures in the laboratory<\/li><li>Information on disposal and environmental protection<\/li><li>Transport and labeling instructions<\/li><li>Provision in understandable language for the user<\/li><\/ul>\n\t\t\t\t\t<\/div>\n\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>\n\t\t<div class=\"elementor-element elementor-element-459276a e-con-full e-flex e-con e-child\" data-id=\"459276a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8442c6d elementor-widget elementor-widget-wd_text_block\" data-id=\"8442c6d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<section><p>An SDS helps to minimize risks and comply with laboratory standards. It is part of the responsibility of suppliers and users to know this information and take it into account in their day-to-day work. <\/p><\/section>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59f7774 elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"59f7774\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-primary btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\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<section class=\"wd-negative-gap elementor-section elementor-top-section elementor-element elementor-element-28940b87 elementor-section-content-middle wd-section-stretch elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"28940b87\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\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-100 elementor-top-column elementor-element elementor-element-1efbe34f\" data-id=\"1efbe34f\" data-element_type=\"column\" data-e-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-7a9a92d wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"7a9a92d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-white wd-title-style-default wd-title-size-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-xxl\">Batches, traceability and comparability<br \/>\n<\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e04ce66 checklist cards four-col  accent-bg elementor-widget elementor-widget-wd_text_block\" data-id=\"e04ce66\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<ul><li>Each batch has its own analytical profile<\/li><li>Batch numbers enable clear assignment of documents<\/li><li>Traceability is a prerequisite for reproducible results<\/li><li>Comparability between experiments requires the same batch basis<\/li><li>Process changes can measurably influence properties<\/li><li>Documentation combines production, analysis and application<\/li><li>Long-term studies benefit from consistent batch management<\/li><li>Transparent labeling reduces interpretation errors<\/li><\/ul>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71cd8aa5 elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"71cd8aa5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-white btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\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<div class=\"wd-negative-gap elementor-element elementor-element-b6434df wd-section-stretch e-flex e-con-boxed e-con e-parent\" data-id=\"b6434df\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-c1c4d83 e-con-full e-flex e-con e-child\" data-id=\"c1c4d83\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0fb454f wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"0fb454f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-xxl\">Typical quality problems and how to detect them analytically  <\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ac25a4d e-con-full e-flex e-con e-child\" data-id=\"ac25a4d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-73e4702 e-con-full e-flex e-con e-child\" data-id=\"73e4702\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-406f122 elementor-widget elementor-widget-wd_image_or_svg\" data-id=\"406f122\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_image_or_svg.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"wd-image text-left\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"674\" src=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0002_adb_1417523111.webp\" class=\"attachment-full size-full\" alt=\"Blick in ein gro\u00dfes Forschungslabor\" srcset=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0002_adb_1417523111.webp 1024w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0002_adb_1417523111-300x197.webp 300w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0002_adb_1417523111-768x506.webp 768w, https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-img-h_0002_adb_1417523111-148x97.webp 148w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e8bf64e e-con-full e-flex e-con e-child\" data-id=\"e8bf64e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2254751 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"2254751\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<ul><li>Unexpected peaks in the HPLC chromatogram indicate by-products<\/li><li>Deviating molecular masses in the MS indicate modifications or degradation<\/li><li>Broad or superimposed peaks complicate the purity assessment<\/li><li>Differences between batches are reflected in changed profiles<\/li><li>Residues from the synthesis influence analytical results<\/li><li>Improper storage leads to measurable loss of quality<\/li><li>Incomplete documentation makes root cause analysis difficult<\/li><li>Methodological differences can distort results<\/li><\/ul>\n\t\t\t\t\t<\/div>\n\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>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"wd-negative-gap elementor-element elementor-element-100e216 wd-section-stretch e-flex e-con-boxed e-con e-parent\" data-id=\"100e216\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-83de1d7 e-con-full e-flex e-con e-child\" data-id=\"83de1d7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bf38b05 wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"bf38b05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-large text-center\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-xxl\">Classifying analytics correctly: <br \/>\nWhat documents can do - and what they can't<br \/>\n<\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b2ecafc e-con-full e-flex e-con e-child\" data-id=\"b2ecafc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-80a4c46 e-con-full e-flex e-con e-child\" data-id=\"80a4c46\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4da5229 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"4da5229\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p>Analytical documents provide structured information on the identity, purity and safety of peptides. They form the basis for well-founded decisions in the laboratory, but do not replace the professional evaluation by the user. Every analysis is bound to methods, measurement conditions and defined questions.  <\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ac73aa7 e-con-full e-flex e-con e-child\" data-id=\"ac73aa7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f0f4da0 checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"f0f4da0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p>Values from COA, HPLC or MS are snapshots of a batch. They provide information about the tested condition, not about every possible change during storage or use. It is therefore important to understand analytics as a guide and to interpret results in the respective experimental context.  <\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cc78990 e-con-full e-flex e-con e-child\" data-id=\"cc78990\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-114cb4f checklist  elementor-widget elementor-widget-wd_text_block\" data-id=\"114cb4f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<section><section><p>A realistic classification of the documents prevents false expectations. Analysis creates transparency and comparability, but requires that methods are understood and limits accepted. Only this interaction enables responsible and scientifically sound handling of peptides.  <\/p><\/section><\/section>\n\t\t\t\t\t<\/div>\n\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>\n\t\t<div class=\"elementor-element elementor-element-c19e6e1 e-con-full e-flex e-con e-child\" data-id=\"c19e6e1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6145ce5 elementor-widget__width-auto elementor-widget elementor-widget-wd_button\" data-id=\"6145ce5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-center\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-primary btn-icon-pos-right\"  href=\"https:\/\/www.glowingpeptides.com\/en\/shop\/\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tTo the store\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Quality &amp; Analytics &#8211; Why detection is crucial for peptides In the case of peptides as research reagents, quality is<\/p>\n","protected":false},"author":1,"featured_media":13012,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-13018","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Quality &amp; analytics for peptides - COA, HPLC and SDS explained - Glowing Peptides<\/title>\n<meta name=\"description\" content=\"Quality and analytics are crucial for peptides. Explanation of purity, COA, HPLC and SDS in the context of scientific research\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quality &amp; analytics for peptides - COA, HPLC and SDS explained - Glowing Peptides\" \/>\n<meta property=\"og:description\" content=\"Quality and analytics are crucial for peptides. Explanation of purity, COA, HPLC and SDS in the context of scientific research\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/\" \/>\n<meta property=\"og:site_name\" content=\"Glowing Peptides\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-27T17:41:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"760\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/\",\"url\":\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/\",\"name\":\"Quality & analytics for peptides - COA, HPLC and SDS explained - Glowing Peptides\",\"isPartOf\":{\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp\",\"datePublished\":\"2026-01-20T14:47:19+00:00\",\"dateModified\":\"2026-03-27T17:41:15+00:00\",\"description\":\"Quality and analytics are crucial for peptides. Explanation of purity, COA, HPLC and SDS in the context of scientific research\",\"breadcrumb\":{\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#primaryimage\",\"url\":\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp\",\"contentUrl\":\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp\",\"width\":1920,\"height\":760},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Start\",\"item\":\"https:\/\/www.glowingpeptides.com\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"3. Quality &amp; analytics\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/#website\",\"url\":\"https:\/\/www.glowingpeptides.com\/en\/\",\"name\":\"Glowing Peptides\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.glowingpeptides.com\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/#organization\",\"name\":\"Glowing Peptides\",\"url\":\"https:\/\/www.glowingpeptides.com\/en\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/glowing-peptides-logo-600x259-1.png\",\"contentUrl\":\"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/glowing-peptides-logo-600x259-1.png\",\"width\":600,\"height\":259,\"caption\":\"Glowing Peptides\"},\"image\":{\"@id\":\"https:\/\/www.glowingpeptides.com\/en\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Quality & analytics for peptides - COA, HPLC and SDS explained - Glowing Peptides","description":"Quality and analytics are crucial for peptides. Explanation of purity, COA, HPLC and SDS in the context of scientific research","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:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/","og_locale":"en_US","og_type":"article","og_title":"Quality & analytics for peptides - COA, HPLC and SDS explained - Glowing Peptides","og_description":"Quality and analytics are crucial for peptides. Explanation of purity, COA, HPLC and SDS in the context of scientific research","og_url":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/","og_site_name":"Glowing Peptides","article_modified_time":"2026-03-27T17:41:15+00:00","og_image":[{"width":1920,"height":760,"url":"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/","url":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/","name":"Quality & analytics for peptides - COA, HPLC and SDS explained - Glowing Peptides","isPartOf":{"@id":"https:\/\/www.glowingpeptides.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#primaryimage"},"image":{"@id":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#primaryimage"},"thumbnailUrl":"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp","datePublished":"2026-01-20T14:47:19+00:00","dateModified":"2026-03-27T17:41:15+00:00","description":"Quality and analytics are crucial for peptides. Explanation of purity, COA, HPLC and SDS in the context of scientific research","breadcrumb":{"@id":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#primaryimage","url":"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp","contentUrl":"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/gp-tb_0002_adb_1438731640.webp","width":1920,"height":760},{"@type":"BreadcrumbList","@id":"https:\/\/www.glowingpeptides.com\/en\/3-quality-analytics\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Start","item":"https:\/\/www.glowingpeptides.com\/en\/"},{"@type":"ListItem","position":2,"name":"3. Quality &amp; analytics"}]},{"@type":"WebSite","@id":"https:\/\/www.glowingpeptides.com\/en\/#website","url":"https:\/\/www.glowingpeptides.com\/en\/","name":"Glowing Peptides","description":"","publisher":{"@id":"https:\/\/www.glowingpeptides.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.glowingpeptides.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.glowingpeptides.com\/en\/#organization","name":"Glowing Peptides","url":"https:\/\/www.glowingpeptides.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.glowingpeptides.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/glowing-peptides-logo-600x259-1.png","contentUrl":"https:\/\/www.glowingpeptides.com\/wp-content\/uploads\/2026\/01\/glowing-peptides-logo-600x259-1.png","width":600,"height":259,"caption":"Glowing Peptides"},"image":{"@id":"https:\/\/www.glowingpeptides.com\/en\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/pages\/13018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/comments?post=13018"}],"version-history":[{"count":4,"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/pages\/13018\/revisions"}],"predecessor-version":[{"id":14974,"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/pages\/13018\/revisions\/14974"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/media\/13012"}],"wp:attachment":[{"href":"https:\/\/www.glowingpeptides.com\/en\/wp-json\/wp\/v2\/media?parent=13018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}