Research library
Research Library
Method, quality, and handling notes for research peptides. For laboratory research use only.
Why third-party testing matters: in-house vs independent verification
A purity number is only as trustworthy as the party that produced it. This is the difference between in-house testing and independent…
Read >What lyophilization is, and why peptides are freeze-dried
Most research peptides are supplied as a dry powder produced by lyophilization, or freeze-drying. The method is not just a packaging choice.…
Read >Cold-chain shipping and handling for research peptides
How a peptide is packed and shipped affects what arrives. Lyophilized material is more forgiving than solution, but handling still matters. This…
Read >Mass spectrometry: how peptide identity is confirmed
Purity tells you how much of a sample is the target peptide. It does not confirm that the target is the correct…
Read >What "Research Use Only" means, and why it matters
"Research Use Only" is not marketing language. It is a classification that defines what a product is, how it may be sold,…
Read >How to evaluate a research peptide supplier
The research-peptide market is uneven. Some suppliers test every batch and document it. Others copy a purity claim onto a label and…
Read >What HPLC purity testing measures, and why it matters
When a research peptide is described as 99 percent pure, that number comes from HPLC. This explains what the test measures, what…
Read >How to read a peptide Certificate of Analysis
A Certificate of Analysis is the document that tells you what is actually in the vial. A COA that is generic, undated,…
Read >How research peptides are made: an overview of solid-phase peptide synthesis
Most research peptides are built by solid-phase peptide synthesis, or SPPS. Understanding how the method works explains where purity comes from, why…
Read >How to store lyophilized research peptides
Storage is the difference between a research peptide that holds its purity for two years and one that degrades in weeks. Lyophilized…
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