{"id":3105,"date":"2026-10-04T13:31:52","date_gmt":"2026-10-04T13:31:52","guid":{"rendered":"https:\/\/nhdbio.com\/?p=3105"},"modified":"2026-10-04T15:12:09","modified_gmt":"2026-10-04T15:12:09","slug":"%d9%85%d8%aa%d9%88%d8%b3%d8%b7-%d9%86%d9%82%d8%a7%d8%a1-%d9%85%d9%83%d8%aa%d8%a8%d8%a9-%d8%a7%d9%84%d8%a8%d8%a8%d8%aa%d9%8a%d8%af%d8%a7%d8%aa-%d8%a7%d9%84%d9%86%d8%aa%d8%a7%d8%a6%d8%ac-%d8%a7%d9%84","status":"publish","type":"post","link":"https:\/\/nhdbio.com\/ar\/peptide-library-average-purity-individual-results\/","title":{"rendered":"\u0645\u0643\u062a\u0628\u0629 \u0627\u0644\u0628\u0628\u062a\u064a\u062f\u0627\u062a \u064a\u0628\u0644\u063a \u0645\u062a\u0648\u0633\u0637 \u0646\u0642\u0627\u0626\u0647\u0627 91%. \u0645\u0627 \u0647\u0648 \u0623\u0636\u0639\u0641 \u062a\u0633\u0644\u0633\u0644\u061f"},"content":{"rendered":"<p>\u0642\u062f \u064a\u062e\u0641\u064a \u0627\u0644\u0645\u062a\u0648\u0633\u0637 \u0627\u0644\u0639\u064a\u0646\u0629 \u0627\u0644\u0648\u062d\u064a\u062f\u0629 \u0627\u0644\u062a\u064a \u062a\u0633\u0628\u0628 \u0627\u0644\u0645\u0634\u0643\u0644\u0629. \u0639\u0646\u062f \u0637\u0644\u0628 \u0645\u0643\u062a\u0628\u0629 \u0628\u0628\u062a\u064a\u062f\u0627\u062a\u060c \u062a\u0643\u0648\u0646 \u0642\u064a\u0645\u0629 \u0645\u062a\u0648\u0633\u0637 \u0627\u0644\u0646\u0642\u0627\u0621 \u062e\u0644\u0641\u064a\u0629 \u0645\u0641\u064a\u062f\u0629\u060c \u0644\u0643\u0646\u0647\u0627 \u0644\u0627 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u062d\u0644 \u0645\u062d\u0644 \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0644\u0643\u0644 \u062a\u0633\u0644\u0633\u0644.<\/p>\n<h2>\u062e\u0645\u0633\u0629 \u0623\u0631\u0642\u0627\u0645 \u062a\u064f\u0638\u0647\u0631 \u0627\u0644\u0645\u0634\u0643\u0644\u0629<\/h2>\n<p>Consider a hypothetical library with individual purities of 99%, 99%, 99%, 99% and 59%. Their simple arithmetic mean is 91%: (99 + 99 + 99 + 99 + 59) \u00f7 5. Yet one peptide is only 59% pure. This is a teaching example, not a supplier\u2019s batch data. It also is not a measurement of a pooled mixture.<\/p>\n<h2>\u0645\u062a\u0637\u0644\u0628 \u0644\u0643\u0644 \u0628\u0628\u062a\u064a\u062f \u064a\u062c\u064a\u0628 \u0639\u0644\u0649 \u0633\u0624\u0627\u0644 \u0645\u062e\u062a\u0644\u0641<\/h2>\n<p>\u201cAverage purity at least 90%\u201d and \u201cevery peptide at least 90%\u201d are different specifications. JPT\u2019s peptide-quality guidance explicitly discusses why an average can conceal low-purity individual peptides. A requirement for every sequence should say what happens when one fails, rather than leaving that decision until delivery.<\/p>\n<h2>\u0637\u0627\u0628\u0642 \u0643\u0644 \u0646\u062a\u064a\u062c\u0629 \u0645\u0639 \u0645\u0639\u0631\u0651\u0641<\/h2>\n<p>\u064a\u0631\u0628\u0637 \u062a\u0642\u0631\u064a\u0631 \u0627\u0644\u0645\u0643\u062a\u0628\u0629 \u0627\u0644\u0645\u0641\u064a\u062f \u0643\u0644 \u062a\u0633\u0644\u0633\u0644 \u0628\u0645\u0639\u0631\u0651\u0641\u0647 \u0627\u0644\u062e\u0627\u0635 \u0648\u0646\u062a\u064a\u062c\u062a\u0647 \u0627\u0644\u062a\u062d\u0644\u064a\u0644\u064a\u0629 \u0648\u0627\u0644\u0643\u0645\u064a\u0629 \u0627\u0644\u0645\u0633\u0644\u0651\u0645\u0629. \u062a\u062d\u0642\u0642 \u0645\u0646 \u0623\u0646 \u0627\u0644\u0645\u0639\u0631\u0651\u0641\u0627\u062a \u0639\u0644\u0649 \u0627\u0644\u0644\u0648\u062d\u0629 \u0623\u0648 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u062a\u0637\u0627\u0628\u0642 \u0627\u0644\u0645\u0633\u062a\u0646\u062f. \u064a\u0646\u0628\u063a\u064a \u0623\u0646 \u062a\u0643\u0648\u0646 \u0627\u0644\u062a\u0633\u0644\u0633\u0644\u0627\u062a \u0627\u0644\u0645\u0641\u0642\u0648\u062f\u0629 \u0623\u0648 \u0627\u0644\u0641\u0627\u0634\u0644\u0629 \u0638\u0627\u0647\u0631\u0629. \u064a\u0643\u0648\u0646 \u0645\u062e\u0637\u0637 \u0627\u0644\u0645\u0644\u062e\u0635 \u0627\u0644\u062c\u0630\u0627\u0628 \u0623\u0642\u0644 \u0641\u0627\u0626\u062f\u0629 \u0625\u0630\u0627 \u0644\u0645 \u062a\u0633\u062a\u0637\u0639 \u0627\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u0628\u0628\u062a\u064a\u062f \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645 \u0641\u064a \u062a\u062c\u0631\u0628\u0629 \u0645\u0639\u064a\u0646\u0629.<\/p>\n<h2>\u0627\u062a\u0641\u0642 \u0639\u0644\u0649 \u0627\u0644\u0627\u0633\u062a\u062b\u0646\u0627\u0621\u0627\u062a \u0642\u0628\u0644 \u0627\u0644\u062a\u062e\u0644\u064a\u0642<\/h2>\n<p>\u0627\u0633\u0623\u0644 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0627\u0644\u062a\u0633\u0644\u0633\u0644\u0627\u062a \u0627\u0644\u0635\u0639\u0628\u0629 \u0633\u062a\u064f\u0639\u0627\u062f \u0645\u0639\u0627\u0644\u062c\u062a\u0647\u0627\u060c \u0623\u0648 \u062a\u064f\u0628\u0644\u064e\u0651\u063a \u0643\u0627\u0633\u062a\u062b\u0646\u0627\u0621\u0627\u062a\u060c \u0623\u0648 \u062a\u064f\u062d\u0630\u0641\u060c \u0623\u0648 \u062a\u064f\u0648\u0631\u064e\u0651\u062f \u0648\u0641\u0642 \u0645\u0648\u0627\u0635\u0641\u0629 \u0623\u0642\u0644 \u0645\u062a\u0641\u0642 \u0639\u0644\u064a\u0647\u0627. \u064a\u062c\u0628 \u0623\u0646 \u062a\u062a\u0637\u0644\u0628 \u0623\u064a \u062a\u063a\u064a\u064a\u0631\u0627\u062a \u0641\u064a \u0627\u0644\u062a\u0633\u0644\u0633\u0644\u0627\u062a \u0645\u0648\u0627\u0641\u0642\u0629 \u0635\u0631\u064a\u062d\u0629. \u0643\u0630\u0644\u0643 \u0645\u064a\u0651\u0632 \u0628\u064a\u0646 \u0627\u0644\u0639\u064a\u0646\u0627\u062a \u0627\u0644\u0641\u0631\u062f\u064a\u0629 \u0648\u0627\u0644\u062a\u0648\u0631\u064a\u062f \u0627\u0644\u0645\u062c\u0645\u0651\u0639: \u0641\u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u064a\u062b\u064a\u0631 \u0623\u0633\u0626\u0644\u0629 \u0625\u0636\u0627\u0641\u064a\u0629 \u062d\u0648\u0644 \u0643\u0645\u064a\u0627\u062a \u0627\u0644\u062e\u0644\u0637 \u0648\u0625\u0645\u0643\u0627\u0646\u064a\u0629 \u0627\u0644\u062a\u062a\u0628\u0639. \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0629 \u0627\u0644\u0635\u062d\u064a\u062d\u0629 \u0647\u064a \u0627\u0644\u062a\u064a \u062a\u062f\u0639\u0645 \u0641\u062d\u0635\u0643\u060c \u0648\u0644\u064a\u0633 \u0645\u062c\u0631\u062f \u0623\u0643\u0628\u0631 \u0646\u0633\u0628\u0629 \u0645\u0626\u0648\u064a\u0629 \u0641\u064a \u0639\u0631\u0636 \u0627\u0644\u0633\u0639\u0631.<\/p>\n<h2>\u0627\u0644\u062e\u0637\u0648\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629 \u0645\u0639 NHD<\/h2>\n<p>\u062a\u062d\u062f\u062f \u0628\u0637\u0627\u0642\u0627\u062a \u0627\u0644\u0645\u0646\u062a\u062c\u0627\u062a \u0630\u0627\u062a \u0627\u0644\u0635\u0644\u0629 \u0623\u062f\u0646\u0627\u0647 \u0639\u0627\u0626\u0644\u0627\u062a \u0627\u0644\u0628\u0628\u062a\u064a\u062f\u0627\u062a \u0641\u064a \u0627\u0644\u0643\u062a\u0627\u0644\u0648\u062c. \u0648\u0647\u064a \u0644\u0627 \u062a\u0624\u0643\u062f \u062a\u0648\u0641\u0631 \u0646\u0633\u062e \u0645\u0648\u0633\u0648\u0645\u0629 \u0628\u0627\u0644\u0628\u064a\u0648\u062a\u064a\u0646 \u0623\u0648 \u0641\u0644\u0648\u0631\u064a\u0629 \u0623\u0648 \u0645\u0648\u0633\u0648\u0645\u0629 \u0628\u0627\u0644\u0646\u0638\u0627\u0626\u0631 \u0623\u0648 \u0646\u0633\u062e \u0645\u0643\u062a\u0628\u0627\u062a. \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0645\u0627\u062f\u0629 \u0645\u0639\u062f\u0644\u0629\u060c \u062d\u062f\u062f \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062f\u0642\u064a\u0642 \u0641\u064a \u0627\u0633\u062a\u0641\u0633\u0627\u0631 \u0645\u062e\u0635\u0635.<\/p>\n<p>\u0627\u0628\u062f\u0623 \u0628\u0640 <a href=\"https:\/\/nhdbio.com\/ar\/%d8%aa%d8%b5%d9%85%d9%8a%d9%85-%d9%85%d9%83%d8%aa%d8%a8%d8%a9-%d8%a7%d9%84%d8%a8%d8%a8%d8%aa%d9%8a%d8%af%d8%a7%d8%aa-%d8%a7%d9%84%d9%85%d8%aa%d8%af%d8%a7%d8%ae%d9%84%d8%a9-%d9%88%d8%b7%d9%84%d8%a8\/\">\u062f\u0644\u064a\u0644 \u0637\u0644\u0628 \u0645\u0643\u062a\u0628\u0629 \u0627\u0644\u0628\u0628\u062a\u064a\u062f\u0627\u062a<\/a>. \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0639\u0631\u0636 \u0633\u0639\u0631\u060c <a href=\"https:\/\/nhdbio.com\/ar\/%d8%a7%d9%82%d8%aa%d8%a8%d8%a7%d8%b3\/\">\u0623\u0631\u0633\u0644 NHD \u062a\u0633\u0644\u0633\u0644\u0643 \u0623\u0648 \u0627\u0633\u0645 \u0627\u0644\u0645\u0646\u062a\u062c \u0648\u0627\u0644\u0643\u0645\u064a\u0629 \u0648\u0627\u0644\u0645\u0633\u062a\u0646\u062f\u0627\u062a \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629<\/a>. \u0623\u0643\u062f \u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u062f\u0642\u064a\u0642 \u0648\u0627\u0644\u062c\u062f\u0648\u0649 \u0648\u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0645\u062a\u0627\u062d\u0629 \u0648\u0634\u0631\u0648\u0637 \u0627\u0644\u062a\u0633\u0644\u064a\u0645 \u0642\u0628\u0644 \u0627\u0644\u0637\u0644\u0628.<\/p>\n<h2>\u0645\u0635\u0627\u062f\u0631<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.jpt.com\/support-contact\/resources\/about-peptide-quality-purity\/\">JPT: \u0646\u0642\u0627\u0621 \u0627\u0644\u0628\u0628\u062a\u064a\u062f \u0627\u0644\u0641\u0631\u062f\u064a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0645\u062a\u0648\u0633\u0637<\/a><\/li>\n<\/ul>\n<p>\u0627\u0644\u0645\u0631\u0627\u062c\u0639 \u0627\u0644\u0639\u0627\u0645\u0629 \u062a\u0634\u0631\u062d \u0627\u0644\u0645\u0648\u0636\u0648\u0639\u061b \u0648\u0647\u064a \u0644\u064a\u0633\u062a \u062f\u0644\u064a\u0644 \u062f\u0641\u0639\u0629 NHD. \u0645\u0648\u0627\u062f \u0627\u0644\u0628\u062d\u062b \u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0628\u062d\u062b \u0648\u0627\u0644\u062a\u0637\u0648\u064a\u0631 \u0648\u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0645\u062e\u062a\u0628\u0631\u064a\u060c \u0648\u0644\u064a\u0633 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0628\u0634\u0631\u064a \u0623\u0648 \u0627\u0644\u0628\u064a\u0637\u0631\u064a.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0642\u062f \u064a\u062e\u0641\u064a \u0627\u0644\u0645\u062a\u0648\u0633\u0637 \u0627\u0644\u0639\u064a\u0646\u0629 \u0627\u0644\u0648\u062d\u064a\u062f\u0629 \u0627\u0644\u062a\u064a \u062a\u0633\u0628\u0628 \u0627\u0644\u0645\u0634\u0643\u0644\u0629. \u0639\u0646\u062f \u0637\u0644\u0628 \u0645\u0643\u062a\u0628\u0629 \u0628\u0628\u062a\u064a\u062f\u0627\u062a\u060c \u062a\u0643\u0648\u0646 \u0642\u064a\u0645\u0629 \u0645\u062a\u0648\u0633\u0637 \u0627\u0644\u0646\u0642\u0627\u0621 \u062e\u0644\u0641\u064a\u0629 \u0645\u0641\u064a\u062f\u0629\u060c \u0644\u0643\u0646\u0647\u0627 \u0644\u0627 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u062d\u0644 \u0645\u062d\u0644 \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0644\u0643\u0644 \u062a\u0633\u0644\u0633\u0644.<\/p>","protected":false},"author":1,"featured_media":3114,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pim_family_ids":"344,348","pim_article_type":"Peptide buying and basics","pim_evidence_level":"Technical references and labeled calculations","pim_reviewer":"Codex AI editorial","pim_reviewed_date":"2026-10-04","pim_editorial_note":"Public data and labeled teaching calculations; not NHD batch results. Confirm project and document availability.","pim_review_status":"reviewed","pim_review_reason":"Source, arithmetic, identity and search-intent checks. No independent human technical review recorded.","pim_creation_method":"AI-assisted writing, source checks and illustrated cover.","pim_sources":"[{\"title\":\"JPT: individual versus average peptide purity\",\"url\":\"https:\/\/www.jpt.com\/support-contact\/resources\/about-peptide-quality-purity\/\",\"note\":\"Public reference, not NHD batch evidence.\"}]","footnotes":""},"categories":[20],"tags":[],"class_list":["post-3105","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-evidence-quality-guides"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>A peptide library averages 91% purity. What is the weakest sequence? - NHD<\/title>\n<meta name=\"description\" content=\"Peptide Raw Materials and Custom Peptide Synthesis\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nhdbio.com\/ar\/\u0645\u062a\u0648\u0633\u0637-\u0646\u0642\u0627\u0621-\u0645\u0643\u062a\u0628\u0629-\u0627\u0644\u0628\u0628\u062a\u064a\u062f\u0627\u062a-\u0627\u0644\u0646\u062a\u0627\u0626\u062c-\u0627\u0644\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A peptide library averages 91% purity. What is the weakest sequence?\" \/>\n<meta property=\"og:description\" content=\"An average can hide the one sample that causes trouble. 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