Research peptide glossary
Terms that appear in certificates of analysis and in our reviews, explained plainly.
- CoA (Certificate of Analysis)
- A lab document reporting the purity, identity and other parameters of a specific product lot.
- HPLC
- High-performance liquid chromatography. The standard method for measuring a peptide's purity percentage.
- Mass spectrometry (MS)
- A technique that confirms a compound's identity by measuring its molecular mass. Complements HPLC: one says how much, the other what it is.
- Batch (lot)
- A production unit. A batch-specific CoA maps to the lot printed on the vial, not a generic product analysis.
- Verifiable at source
- The certificate can be checked on the lab's own domain (e.g. verify.janoshik.com), not just the vendor's site. This blocks forgeries.
- Endotoxin / LAL
- Bacterial contaminants. The LAL (Limulus Amebocyte Lysate) assay quantifies them. Their level matters for material intended for injection in research.
- Bioburden
- The total microbial load of a sample. A value of 0 CFU/g indicates no detectable microbial growth.
- Reconstitution
- Dissolving the lyophilised (powdered) peptide in a solvent, typically bacteriostatic water, before research use.
- Bacteriostatic water
- Water with 0.9% benzyl alcohol that inhibits bacterial growth, used as the standard reconstitution solvent.
- DDP (Delivered Duties Paid)
- A shipping mode where the vendor covers customs duties and taxes. Reduces the hold risk for the European buyer.
- RUO (Research Use Only)
- For research use only. These products are not intended for human consumption.