Last Updated: December 2025

Quality determines whether research succeeds or fails. This page explains how we verify our peptides meet specifications, what testing each batch undergoes, and what documentation comes with your order.

Purity Guarantee

Every peptide we sell meets a 99%+ purity standard. This number represents the minimum threshold a batch must achieve before we’ll ship it.

Batches below this cutoff don’t reach customers. They either go back for additional purification or get rejected outright. There’s no point selling products that will compromise research outcomes.

Analytical Testing

We use multiple analytical methods because no single technique catches every potential problem. Each method examines the product from a different angle.

High Performance Liquid Chromatography (HPLC) separates complex mixtures and quantifies their components. For peptides, HPLC shows the main compound as a primary peak and any impurities as secondary peaks. The ratio between them determines purity percentage. This method reveals synthesis byproducts, incomplete sequences, and degradation products.

Mass Spectrometry (MS) identifies compounds by their molecular mass. We compare observed mass against the calculated mass for the target sequence. A match confirms identity. Discrepancies indicate problems like amino acid substitutions, deletions, or unexpected modifications.

Amino Acid Analysis hydrolyzes peptides into individual amino acids and measures the amount of each. The resulting ratios should reflect the intended sequence. Deviations point to incorporation errors during synthesis.

Peptide Content Determination measures the actual peptide mass versus total vial contents. Lyophilized products contain some residual moisture and counterions. Knowing true peptide content allows accurate concentration calculations when you reconstitute.

Batch by Batch Testing

We test every batch we sell. Not spot checks. Not statistical sampling. Every one.

Each batch gets a lot number that links it to complete testing records. After synthesis and purification, quality control receives samples for analysis. Products that meet specifications proceed to packaging. Products that fail either undergo reprocessing or get rejected.

This approach costs more than random sampling, but it means no untested material reaches your bench.

Certificates of Analysis

You get access to a Certificate of Analysis for every product you buy. The CoA includes the lot number tying documentation to your specific product, peptide sequence and calculated molecular weight, HPLC analysis showing purity percentage with supporting chromatogram, mass spectrometry data confirming identity, physical appearance and solubility characteristics, and testing date.

This documentation supports your quality records and gives you reference data if you need to troubleshoot unexpected results in your own work.

Post Testing Handling

Testing means nothing if products degrade between the lab and your delivery.

Temperature controlled storage maintains appropriate conditions for each product. Stability requirements vary by peptide, and storage reflects those differences. We log temperatures to document that conditions stayed within range.

First in, first out inventory moves older stock before newer stock. Nothing sits in storage indefinitely.

Pre shipment inspection catches packaging problems before dispatch. We check vial integrity, seal quality, label accuracy, and overall package condition. Shipments requiring temperature protection include insulation and cold packs.

Supplier Standards

Some peptides come from external manufacturers who meet our qualification requirements.

Qualifying a supplier means examining their production capabilities and quality systems, verifying their analytical methods against ours, testing their products independently, and reviewing their consistency over time.

Qualification isn’t permanent. We reassess suppliers periodically and investigate any quality signals that suggest standards might be slipping.

Full Traceability

Every product traces back through our system. Lot numbers connect to manufacturing records, test results, storage logs, and supplier information where relevant.

This traceability matters when investigating problems. If something goes wrong, we can identify whether the issue affects other products from the same batch and what specifically happened during production or handling.

Record your lot numbers when products arrive. They’re essential if you ever need to discuss quality concerns with us.

Reporting Quality Issues

If you encounter a product that doesn’t perform as expected, contact us. Include your order information, the lot number from the vial, a clear description of the problem, and any test data you’ve collected.

We investigate quality reports by pulling our retained samples and testing records, sometimes requesting return of affected product for analysis, providing replacements when we confirm a genuine quality issue, and identifying root causes to prevent similar problems.

Complaints help us improve. They’re not inconveniences.

Ongoing Improvement

Quality systems require maintenance and evolution. We audit our own procedures, track patterns in testing data, monitor feedback from customers, and upgrade methods as better techniques become available.

Meeting specifications is the baseline. The actual goal is providing the most consistent, reliable products we can.

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Consistent quality takes investment in testing, systems, and people. We make that investment because research materials shouldn’t be a source of uncertainty.