Bulk Peptides FAQ

Answers to common questions about buying bulk research peptides from Bulk Peptides.

What is the minimum order quantity for bulk peptides?

Every inquiry requires a minimum total quantity of 10 whole vials. Standard catalog vial sizes vary by product; contact us for larger or specialized requirements.

How is purity verified for bulk peptides?

Every lot is tested by reverse-phase HPLC at 220 nm. Our internal purity threshold is ≥99%. Any lot that fails is permanently rejected. Identity is confirmed by electrospray ionization mass spectrometry. Both results are documented in the lot-specific COA.

What documentation comes with a bulk peptide order?

Every order includes a lot-specific Certificate of Analysis (COA) showing the HPLC chromatogram and MS result tied to your exact batch. The COA is batch-specific, not generic.

Do you offer net-30 terms for institutions?

Yes. Qualified research institutions, universities, and CROs can apply for net-30 invoicing terms. Contact us with your institution name and a reference contact.

Can I order custom synthesis?

Yes. We offer custom synthesis services for peptides not in our standard catalog. Submit your sequence, required quantity, and purity specification via our contact form and we will provide a quote.

How should bulk peptides be stored?

Lyophilized peptides should be stored at −20°C in a dry, dark environment. Reconstituted solutions should be stored at −80°C and avoid repeated freeze-thaw cycles. Specific storage conditions are listed on each product COA.

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All products for laboratory research use only (RUO). Not for human or veterinary use.