HPLC integration: which peaks were counted in the purity percentage?
The printed HPLC area percentage depends on which signals were integrated. Integration means deciding where a peak begins and ends and measuring…
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Skin & Cosmetic
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Source-reviewed reading for skin & cosmetic
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Showing 13–18 of 34 reviewed articles · Page 3 of 6
Changing peptide batches: how to make an interpretable comparison
If an experiment changes after a new peptide batch arrives, the batch may be relevant, but it is not automatically the cause.…
Read source review →COA dates: a test date is not an expiry date
A COA may show several dates. They do not all describe the same event. Knowing what was tested, when it was tested…
Read source review →Peptide calculations: avoid correcting the same impurity twice
A calculation can look careful and still be wrong if two percentages describe overlapping parts of the same material. Before multiplying purity…
Read source review →Dry-Looking Peptide Powder Can Still Contain Water
Use a small weight example to separate water content from peptide content.
Read source review →Why the Same Peptide Can Have Different HPLC Retention Times
Find out what controls the time at which a peptide peak appears.
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