Certificates of Analysis (COAs)

• HPLC purity data with a chromatogram and verified minimum purity percentage for the batch.
• MS / molecular identification confirming correct compound identity (method dependent).
• Quality specifications that every accepted batch must meet, including appearance, identification, and purity thresholds.

Bottom line: if a batch does not meet our published specifications, it is rejected and never enters inventory.

In this space, it is common for suppliers to test a single batch (sometimes once per year), then present later batches as if they are covered by that same report.

A Certificate of Analysis 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 Bluewell Peptides products are verified to meet or exceed ≥99.1% purity (HPLC-tested). Each batch undergoes a structured, two-stage verification process.

Stage one: Raw peptide material is tested and validated by our manufacturing partners prior to vialing.

Stage two: Independent third-party confirmation is performed through Axonis Analytics to verify 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 Bluewell 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 in purity can occur between batches and between different analytical tests. Peptides are typically analysed using HPLC (High Performance Liquid Chromatography), which measures purity based on chromatographic peak area under specific conditions. Results can vary depending on factors such as equipment, calibration, solvent systems, and sample handling, meaning different labs may report slightly different purity values for the same material.

Within the peptide industry, purity levels above 90–95% are generally considered high for research-grade products. Our internal testing aims for a baseline of 99.1% purity using validated HPLC methods, and the majority of our batches meet or exceed this level. However, occasional minor variation below this threshold can occur and still represents a high-quality product within accepted industry standards.

Differences between third-party lab results and reported purity are usually due to variations in analytical methodology. Factors such as column type, solvent gradient, detection wavelength, calibration standards, and sample preparation can all influence the final reported purity. Even when testing the same material, different laboratories may produce slightly different results due to these variables.

In the peptide industry, research-grade purity levels above 90% are generally acceptable, with 95%+ considered high quality. Purity levels of 99%+ are considered very high and typically reflect clean synthesis and strong quality control. While we aim for 99.1%+ purity 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.