Quality testing
How to read a certificate of analysis
What each line of a COA tells you, which results to check first, and how to match the document to the vial on your bench.
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Research hub
Plain-language guides to the methods behind our certificates and to handling research material in the lab.
For research use only.
Everything on this page is for laboratory research. Nothing here describes or supports human or veterinary use.
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Methods, quality testing and lab handling, written for researchers.
Quality testing
What each line of a COA tells you, which results to check first, and how to match the document to the vial on your bench.
4 min readAnalytical methods
Reversed-phase HPLC separates a peptide from its synthesis by-products. Here is what the percentage on a report means, and what it leaves out.
3 min readAnalytical methods
How a measured molecular mass confirms that a vial holds the sequence on its label, and why it complements the purity result.
3 min readQuality testing
Bacterial endotoxin can distort cell-based experiments even in a high-purity sample. A short guide to the LAL test and its limits.
3 min readLab handling
Temperature, light and moisture: practical notes on keeping lyophilized research peptides stable before and after reconstitution.
4 min readQuality testing
Every vial carries a lot number. Here is how it links the material on your bench to its production batch and its published results.
2 min readFull catalog
Every product page shows its specifications and the certificate for the lot you'll receive.
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