{"schemaVersion":"ready-scan.discovery-surface.v1","id":"urn:readyscan:corpus:buyer-question:excalibur-peptides-q139929122-answer-0c3831ffbd2ca9898971","key":"buyer_question:excalibur-peptides-q139929122-answer-0c3831ffbd2ca9898971","kind":"buyer_question","slug":"excalibur-peptides-q139929122-answer-0c3831ffbd2ca9898971","canonicalUrl":"https://directory.readyscan.ai/corpus/buyer-question/excalibur-peptides-q139929122-answer-0c3831ffbd2ca9898971","machineUrl":"https://directory.readyscan.ai/discovery/corpus/buyer-question/excalibur-peptides-q139929122-answer-0c3831ffbd2ca9898971.json","datePublished":"2026-10-18","dateModified":"2026-10-18","materialFingerprint":"fnv1a64:6bf640fbe428953f","membershipFingerprint":"fnv1a64:4a890c1afacdb087","relatedEntitySlugs":["excalibur-peptides-q139929122"],"relatedSurfaceKeys":["buyer_question:excalibur-peptides-q139929122-answer-1b4243f4ce05255e75df","buyer_question:excalibur-peptides-q139929122-answer-2b5165d915cd8a220112","buyer_question:excalibur-peptides-q139929122-answer-4c6952dfa509aa2724ae","buyer_question:excalibur-peptides-q139929122-answer-b11f9cfa06ed41324d89","buyer_question:excalibur-peptides-q139929122-answer-b974fc7ba4d701b691b6","buyer_question:excalibur-peptides-q139929122-answer-bdd899915f972c127769","buyer_question:excalibur-peptides-q139929122-answer-e00431caad5a3fd5f401","evidence:excalibur-peptides-q139929122"],"sourceIds":["ready-scan-subjects"],"provenance":[{"snapshotId":"excalibur-peptides-q139929122-content-47f32a83dce9c39d-snapshot","sourceId":"ready-scan-subjects","sourceRecordId":"Q139929122","sourceRevisionId":"Q139929122:content:13d8af9d5cd2916e","sourceContentHash":"fnv1a64:32daeee5ed2ecf36","recordRevisionId":"Q139929122:content:13d8af9d5cd2916e","recordContentHash":"fnv1a64:98dc49a347e4b66a","sourceCanonicalUrl":"https://excaliburpeptides.com/","sourceModifiedAt":"2026-10-18T06:34:24.785Z","observedOn":"2026-10-18","permission":{"basis":"public_information","evidenceUrl":"https://excaliburpeptides.com/"},"attributionUrl":"https://excaliburpeptides.com/"}],"quality":{"method":"same_kind_unique_trigram_floor","minimumUniqueTrigramRatio":0.3,"status":"passed"},"title":"What does HPLC purity testing measure?","summary":"Cited source answers across 1 active corpus record.","question":"What does HPLC purity testing measure?","answers":[{"entitySlug":"excalibur-peptides-q139929122","entityName":"Excalibur Peptides","answer":"“High-Performance Liquid Chromatography separates the components of a peptide sample and quantifies each peak. The purity percentage on a COA is the area of the target-peptide peak as a fraction of all detected peaks — measuring how much of the sample is the intended sequence versus truncated peptides, deletion sequences, or synthesis byproducts.”","sourceUrls":["https://excaliburpeptides.com/"]}]}