COA Literacy
Sterility Testing for Research Peptides: Bioburden, Membrane Filtration, and What It Confirms
A look at how sterility and bioburden testing methods, membrane filtration and direct inoculation, confirm the a...
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COA Literacy
What Peptide Purity Percentages Actually Mean: HPLC Area Percent vs Mass Balance Purity
A closer look at the difference between HPLC area percent purity and mass balance purity, and why the distinctio...
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Batch Testing
Reference Standards in Peptide Analysis: How Laboratories Verify Batch-to-Batch Consistency
A look at how reference standards underpin HPLC and mass spectrometry testing, and why they matter for verifying...
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COA Literacy
Heavy Metal Screening for Research Peptides: What ICP-MS Testing Reveals
An explainer on how inductively coupled plasma mass spectrometry detects trace elemental impurities in research ...
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COA Literacy
What Endotoxin Testing Means for Research Peptides: LAL Assays Explained
A laboratory-focused explainer on what endotoxin testing measures, how the LAL assay works, and how to read endo...
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