Resources

The research bench guide.

Plain-language explainers on handling, storage, purity testing, and Research Use Only handling. Built for the people actually at the bench.

Peptides are supplied lyophilized (freeze-dried) as a stable powder and are dissolved in an aqueous diluent to a known concentration for in-vitro assay preparation. Gentle mixing helps preserve peptide integrity as the powder goes into solution.

Allow vials to reach room temperature before mixing.
Swirl gently; vortexing or vigorous shaking can shear peptide chains.
Concentration (mg/mL) = peptide mass ÷ diluent volume — the working concentration of a reconstituted sample.

Storage conditions are the single biggest factor in peptide longevity. Lyophilized powder is far more stable than reconstituted solution, so store unopened vials cold and only reconstitute what you will use.

Lyophilized: refrigerate at 36–46°F (2–8°C), protected from light.
Once in solution, peptides are less stable than the lyophilized powder — keep refrigerated; potency degrades over time.
For long-term storage of powder, many labs use −20°C; avoid repeated freeze–thaw cycles.

High-performance liquid chromatography (HPLC) separates the compounds in a sample as they pass through a column at different rates. A detector plots each as a peak; the area of the main peak relative to the total is reported as percent purity. A tall, clean primary peak with minimal secondary peaks indicates high purity.

Reverse-phase HPLC (RP-HPLC) is the standard method for peptides.
Detection at 214 nm captures the peptide bond directly.
Every Aminent lot lists its measured purity on the certificate of analysis.

A certificate of analysis (COA) is the document that ties a specific lot to its test results. It should identify the compound, the batch, the analytical methods used, and the measured purity — with a pass/fail against a stated threshold.

Check that the batch number on the COA matches your vial.
Look for both purity (HPLC) and identity (mass spec) results.
Confirm the batch number on the certificate matches the vial you received.

All Aminent Labs products are designated For Research Use Only (RUO). This means they are intended exclusively for in-vitro research and laboratory work by qualified professionals. They are not drugs, are not for human or veterinary use, and are not for diagnostic or therapeutic purposes.

Handle with appropriate PPE and lab safety practices.
Follow your institution’s protocols for handling and disposal.
RUO materials must not be administered to humans or animals.
Every product is HPLC and mass-spec verified, with identity and purity documented per lot. Browse the catalog.