Reversed-Phase HPLC
HPLC separates sample components and estimates the relative area of detected peaks. It helps quantify purity and reveal detectable impurities under the stated method.
Read the HPLC guideQuality and Testing
How Are Research Peptides Verified?
Research peptide evaluation combines multiple forms of evidence. HPLC estimates purity, mass spectrometry supports molecular identity, and batch-specific documentation connects those results to the material supplied.
No single number proves everything. A high HPLC purity result does not, by itself, confirm that the primary peak is the intended peptide. Qualified buyers should review purity and identity evidence together.
Mass Spectrometry
Mass spectrometry measures mass-to-charge information that can support confirmation of molecular identity. It answers a different question from chromatographic purity.
Review the glossary termCertificate of Analysis
A useful CoA identifies the compound and lot, reports the analytical method and result, and connects the document to the supplied batch.
Learn to read a CoALot and Handling Records
Lot identification, physical form, storage conditions, and shipping history help preserve the link between test results and the received material.
Review stability guidanceEvaluation Checklist
What Should a Qualified Buyer Verify?
- Compound name and defined amino-acid sequence
- Molecular formula and expected molecular weight
- Batch or lot number matching the supplied material
- HPLC method and measured purity result
- Identity evidence such as mass spectrometry
- Physical form, storage conditions, and documentation date
Put It Into Practice
Compare Documentation Before Comparing Price
Once you understand the evidence, review how supplier traceability, storage, shipping, and technical support affect a research purchase.