HPLC purity data with a chromatogram and verified minimum purity percentage for the batch; MS / molecular identification confirming correct compound identity (method dependent); and quality specifications every accepted batch must meet, including appearance, identification, and purity thresholds. If a batch does not meet our published specifications, it is rejected and never enters inventory.

It is common for suppliers to test a single batch (sometimes once per year), then present later batches as if covered by that same report. A COA only reflects the material that was tested. Without proper upstream controls and documentation, a COA alone cannot guarantee that subsequent batches match the same standard.

A finished-vial test in isolation only confirms the specific sample tested. It does not automatically guarantee that the entire production run meets the same standard. Meaningful quality assurance requires verified raw peptide material, controlled manufacturing processes, and batch-level documentation prior to vialing.

All products are verified to meet or exceed ≥99.1% purity (HPLC-tested). Each batch undergoes a structured, two-stage process. Stage one: raw peptide material is tested and validated by our manufacturing partners prior to vialing. Stage two: independent third-party confirmation verifies HPLC purity and molecular identity (method dependent).

Independent testing can provide additional reassurance, but it is only meaningful when supported by proper upstream controls.

We publish results in a standardised Everblue layout that is easy to read and compare. The numerical results and conclusions are unchanged from the verified laboratory data.

Proprietary formats: HPLC and LC-MS systems export files not designed for public sharing. Confidential facility data: internal SOP references, equipment IDs, and batch-tracking information are embedded. Redaction reduces clarity: heavily redacted files often create more confusion than transparency.

No. We never change analytical results. Each batch is supported by manufacturer data and independent verification.

COAs are batch-specific. Analytical values such as purity percentage and retention time can vary slightly between production runs.

No. Synthetic SPPS production, controlled processes, and research-grade handling reduce contamination risk.

The batch number is printed on your vial label. Match this number to the COA header to ensure you are viewing the correct report.

Yes. Each product page includes a downloadable COA. You may also save the on-page image for your records.

Yes, slight variation can occur between batches and between analytical tests. Peptides are typically analysed using HPLC, which measures purity by chromatographic peak area under specific conditions. Results can vary with equipment, calibration, solvent systems, and sample handling, so different labs may report slightly different values for the same material. Within the industry, purity above 90–95% is generally considered high for research-grade products. Our internal testing aims for a 99.1% baseline using validated HPLC methods, and the majority of batches meet or exceed this; occasional minor variation below the threshold can still represent a high-quality product within accepted standards.

Differences are usually due to variations in analytical methodology. Column type, solvent gradient, detection wavelength, calibration standards, and sample preparation all influence the final reported purity. Even testing the same material, different laboratories may produce slightly different results.

Research-grade purity above 90% is generally acceptable, with 95%+ considered high quality and 99%+ very high, typically reflecting clean synthesis and strong quality control. We aim for 99.1%+ as our internal benchmark; slightly lower results can still fall well within industry standards for high-quality research peptides.

Yes. We retain historical COAs and can provide previous batch reports on request.

No. COAs are provided for research documentation and transparency only.