Quality
Quality standards in research
Reproducibility starts with the material. These are the criteria we use — and recommend — to assess any peptide intended for research.
Purity by HPLC
High-performance liquid chromatography with the chromatogram attached. For research, ≥98% is the usual benchmark.
Identity by MS
Mass spectrometry confirming the observed mass matches the theoretical mass.
Batch-specific COA
Certificate of Analysis with batch number, dates, method and an identifiable laboratory.
Endotoxins and contaminants
LAL test, residual solvents and heavy metals — essential for cell culture and in vivo models.
Storage and stability
Lyophilised peptides are generally stored at −20 °C, protected from light and moisture.
Recommended reading
Learn to assess a COA
A certificate of analysis is only worth something if it is batch-specific, complete and verifiable. We prepared a guide on what to look for and the most common red flags.
Quick checklist
- Batch number on the COA and the label
- HPLC chromatogram attached
- Mass spectrum with theoretical mass
- Identifiable laboratory and date
- Peptide content and counter-ions stated
- Storage conditions specified