Chemical analysis

Quality analysis certificates

For complete transparency, we provide access to all Certificates of Analysis (COA). Every customer can see the certificate issued by Janoshik for the respective product directly on its product page. This way we guarantee trust and security with every order. All our products are tested and analyzed in the Czech laboratory Janoshik .

Quality control with LC-MS and HPLC

In our work, quality is a top priority. All PurePeptide products undergo strict analytical control using HPLC and LC-MS (liquid chromatography - mass spectrometry) . LC-MS is the gold standard in laboratory practice and allows for high-precision confirmation of the purity and composition of peptides. This way, we guarantee that you receive a product with reliable quality and confirmed purity ≥98%.

Why don't we offer ready-made solutions?

We offer our peptides in lyophilized (dehydrated) form - this is the most stable form for storage and transport. For ready-made solutions, the shelf life is limited to about 4 weeks when transported refrigerated. Lyophilization preserves the structure and activity of the peptide for up to 2 years under refrigerated conditions, without the need for preservatives.

Additional stability control

To ensure reliability and a real-world assessment of quality, our peptides are also subjected to stability testing . The products are kept at room temperature for several weeks before testing to simulate the conditions under which customers would receive them. This ensures that each batch retains its purity and properties not only in laboratory conditions, but also in real-world situations.

Benefits for researchers and laboratories

By combining strict purity control via LC-MS , testing performed by the most respected peptide laboratory , and lyophilized delivery form , our products provide maximum reliability and convenience for researchers who value precision and stability in their work.