Research & Analytical Science
Peptide Purity vs. Peptide Identity: What’s the Difference?
Understand the difference between peptide purity and identity, and how HPLC and LC-MS address each analytical question.
Blog
Research & Analytical Science
Understanding Peptide Sequences and Molecular Formulas
Learn how peptide sequences relate to molecular formulas, composition, molecular mass, and analytical characterization.
Research & Analytical Science
Third-Party Laboratory Testing: What Researchers Should Know
Learn how independent laboratory testing works, what analytical documentation can show, and why batch-specific testing matters in research.
Research & Analytical Science
HPLC vs. LC-MS: What Does Each Technique Tell You?
Compare HPLC and LC-MS, including what each technique measures, how results differ, and when each analytical method is useful.
Research & Analytical Science
Peptide Molecular Weight: Why It Matters in Analytical Testing
Understand peptide molecular weight, molecular mass, and how analytical techniques such as LC-MS can characterize compounds.
Research & Analytical Science
How to Read a Certificate of Analysis
Learn how to interpret common sections of a laboratory Certificate of Analysis, including identity, purity, batch information, methods, and specifications.
Research & Analytical Science
How Laboratories Measure Peptide Purity
Explore common laboratory approaches to peptide purity testing, including HPLC analysis, chromatograms, and analytical specifications.
Research & Analytical Science
LC-MS Explained: A Guide to Mass Spectrometry for Peptide Analysis
Understand how LC-MS combines liquid chromatography and mass spectrometry for compound identification and analytical characterization.
Research & Analytical Science
HPLC Explained: How High-Performance Liquid Chromatography Works
A practical introduction to HPLC, including separation, chromatograms, retention time, and analytical applications.
Research & Analytical Science
What Is a Certificate of Analysis (COA)? A Complete Guide
Learn what a Certificate of Analysis is, what information it contains, and how researchers can interpret laboratory analytical documentation.