Interpreting purity and measured content together
Work through area purity and milligrams per vial without confusing the label claim, a chromatographic percentage and the measured amount.
Read the article →Research Hub
Explore peptide science, analytical testing and the documentation behind research materials.
500 articles to explore
Reading a peptide blend certificate
Reconcile a blend's named components, individual measured amounts, combined purity and total label claim using a supplied two-peptide report.
Read the article →Reading a copper-peptide certificate
Use a supplied GHK-Cu report to distinguish peptide identity, complex content, chromatographic purity and the copper-to-peptide molar ratio.
Read the article →Reading a laboratory water certificate
Read formulation, chemical and microbiological results on a water report, and recognise when the sample basis or test timing needs clarification.
Read the article →What does testing one vial establish about a batch?
Separate evidence about a tested vial from claims about a whole lot, and distinguish repeat measurements from independently sampled units.
Read the article →How reversed-phase HPLC separates peptide mixtures
Follow a peptide mixture through an HPLC column and understand why different retention produces peaks—and why a peak alone does not establish identity.
Read the article →What is a peptide?
Understand what makes a molecule a peptide, how amino-acid residues form a sequence, and what the name alone leaves unanswered.
Read the article →What does research use only mean for a peptide reagent?
Read research-use language as an intended-use statement, while keeping analytical evidence, research suitability and regulatory status separate.
Read the article →How to read an amino acid sequence
Decode one-letter and three-letter residue notation, read sequence direction and notice the chemical details a plain letter string may omit.
Read the article →What does a CAS number identify?
Understand the role of a CAS Registry Number, how to use it when checking a molecular description and why it does not identify a tested batch.
Read the article →Why HPLC purity depends on the method
Compare HPLC purity figures by checking separation, detector response, integration and reporting scope before ranking the percentages.
Read the article →How mass spectrometry helps identify peptides
Understand the difference between an observed ion, an inferred molecular mass and the additional evidence needed to support a peptide identity.
Read the article →