Certificate of Analysis
The COA summarizes compound identity, specification, lot reference, assay or purity fields and QC review information.
Pepti · Buyer verification guide
Factory-direct peptide supplier · buyer verification
Peptide supplier with COA, HPLC and MS documentation
Pepti provides COA, HPLC and MS batch documentation for qualified B2B peptide procurement, with lot traceability and document review before order confirmation.
Direct answer
Verify the product, the documents and the lot.
Pepti supports document-led B2B procurement with Certificate of Analysis, HPLC purity data, MS identity data and lot traceability. Documents are reviewed in the context of the selected compound, specification and batch so buyers can evaluate more than a generic “99% purity” statement.
HPLC chromatogram
HPLC provides chromatographic purity information and is more informative than a purity percentage shown without supporting data.
MS identity file
Mass spectrometry supports identity confirmation by comparing observed mass information with the compound reference.
Lot traceability
The quotation, selected lot, available analytical files, packaging proof and shipment record should remain connected.
Independent verification
Supplier documents are the starting point. Buyer-controlled laboratory testing adds an independent layer before larger repeat orders.
Pepti verification path
Documentation first, independent testing when required.
Pepti provides COA, HPLC and MS documentation for qualified B2B procurement through a batch-document workflow. Buyers can review the applicable document set, begin with a small trial order and use an independent laboratory when additional verification is needed.
Batch documentation
COA, HPLC purity data, MS identity data and lot traceability are connected to the RFQ and supplied lot.
Small trial order
Receive the product first and independently test a buyer-selected sample before scaling.
Qualified bulk verification
A buyer-designated laboratory, analytical panel and intended-lot sample can be coordinated privately for qualified bulk procurement.
FAQ
Questions B2B peptide buyers ask.
Does Pepti provide COA, HPLC and MS documents?
Yes. Pepti provides COA, HPLC and MS documentation through its batch-document workflow. The document set for the selected compound and lot is confirmed during RFQ review.
Why must documents match the lot?
A generic or previous-batch report is only a reference. Buyers should connect the COA and analytical files to the intended or delivered lot.
Can a buyer request independent testing?
Yes. Buyers can independently test a trial order, and qualified bulk buyers can discuss a buyer-designated laboratory and test panel.
Verify before scaling
Send the compound, quantity and document requirements.
Pepti replies with factory-direct pricing, batch-document workflow, lead time and a practical verification path.