HPLC
7 articles tagged with ‘HPLC’
Peptide Testing in Canada: HPLC, Mass Spec and Reading a COA
Every vendor says its material is pure, and almost nobody who reads the claim can evaluate it. What reversed-phase HPLC and mass spectrometry each actually measure, the seven fields a Certificate of Analysis has to carry, the four things it cannot establish, and the one verification step that does not depend on trusting the seller.
What a Peptide Blend Costs You Analytically
Put four peptides in one vial and ask what its purity figure refers to. The largest peak is not the product, and the other three peaks are not impurities. What a blend costs you analytically, with our own four blends audited against the same standard.
Identity Is the Test Almost Nobody Runs
Rearrange TB-500's seven residues and there are 1,260 arrangements that all weigh exactly the same. Purity gets reported constantly and identity almost never, so here is what each method can and cannot establish about whether a vial holds the sequence on the label.
How to Tell If a Peptide Supplier Is Legitimate: The 2027 Verification Checklist
A certificate of analysis is the easiest document in this market to fake. Nine checks, ranked by how hard each one is to fake, including the two that separate a traceable supplier from a convincing one.
BPC-157 10mg: Sequence, Analytical Identity and the Shape of the Literature
BPC-157 is a 15-residue synthetic peptide with no cysteine, methionine or tryptophan. Its sequence and registry data, what HPLC and mass spectrometry confirm on a lot, and why its published literature has to be read with its study design in view.
Peptide Purity: Standards, Testing and Analytical Methods
Peptide purity standards, analytical methods and testing for research: what HPLC, mass spectrometry and amino acid analysis each establish, and what a purity figure needs beside it to be checkable.
How to Read a Certificate of Analysis (COA): The Complete Guide for Peptide Researchers
A working guide to interpreting every section of a peptide Certificate of Analysis, from HPLC chromatograms and mass spec data to spotting the red flags that separate credible documentation from recycled paperwork.
