Purita research journal

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Knowledge drives better research. Explore articles, practical guides and industry insights from Purita Peptides. Stay informed with expert content covering peptides, laboratory practices and the latest scientific developments.

• How HPLC peptide analysis works: from sample injection to chromatogramOpen an HPLC report for a research peptide and the chromatogram is usually the first thing you notice. One large peak, maybe a few smaller ones trailing behind it, retention times, and a purity figure – something like 99
• How to tell if research peptides are realThere is no visual test that can tell you whether a research peptide is authentic. A white lyophilized material may be the expected peptide, something else, or a mixture. Packaging does not settle the question either. An
• 99% pure – but 99% of what? Understanding peptide purityA research peptide can come with a 99% purity figure, but the number is easy to read too literally. It does not necessarily mean that 99% of everything in the vial is the target peptide and the remaining 1% is
• Endotoxins in research peptides: what they are, where they come from, and why they matterEndotoxins are easy to overlook when working with research peptides. There may be nothing unusual about the appearance of a sample, and no living bacteria need to be present. Yet bacterial material left behind earlier in
• Why yesterday’s COA can’t guarantee today’s peptide: the case for batch-by-batch testingA Certificate of Analysis can look reassuringly permanent. A research peptide was tested, the laboratory reported 99%+ purity, and the certificate was issued and uploaded. Months later, another batch of the same research