Every lot tested. Every result documented.
Purity claims are only useful if they are verifiable. We publish the methods we use, the thresholds we hold to, and the documentation that ships with your order.
1. Synthesis to specification
Material is produced under documented protocols in facilities operating to defined quality standards, with in-process controls at each stage.
2. Independent HPLC analysis
Samples from every lot go to an accredited third-party laboratory for HPLC-UV purity determination. Our release threshold is ≥99%.
3. Mass spectrometry identity
MS confirms molecular weight and identity against the expected structure before the lot can be released for sale.
4. Release and documentation
Only lots passing both tests are released. A lot-matched certificate of analysis accompanies every order for your records.
Reading your certificate of analysis
Each COA lists the lot number, test date, analytical method, chromatogram, calculated purity, and the mass spectrometry result. Match the lot number on the COA to the number printed on your vial label — they should always agree.
- Lot numberTraceable to the specific batch you received
- HPLC-UV purityArea-percent purity against the release threshold
- MS identityObserved vs. expected molecular weight
- Appearance & formLyophilized powder, colour and physical state
Compliance notice
All materials sold by PureScience Peptide are for research use only and are not intended for human or veterinary use. These products have not been evaluated by the FDA and are not designed for therapeutic, diagnostic, or clinical purposes. Any use outside of legitimate in vitro research applications may be subject to regulatory action. By purchasing, the buyer acknowledges and agrees that materials will be used exclusively for lawful research purposes by qualified personnel in an appropriate facility.