Quality assurance

A batch-matched CoA is supplied with every dispatched product.

Every catalogue code has a certificate record. The batch-matched CoA is sent electronically with the dispatched product and retained against the exact lot. If the certificate is absent or mismatched, the item remains on hold.

Download CoA upload templateHandling & storage
Dispatch gate: no item should be dispatched without a batch-matched certificate identifying the product, code, strength, lot, test date, laboratory, method and result. The current website preview contains no fabricated certificates; real supplier PDFs must be reviewed and uploaded as they arrive.
Customer document policy: the reviewed CoA is sent with the product order, normally as a digital shipment document. A public copy may also be linked here after confidential information and authenticity are reviewed.
Catalog records85
Verified PDFs linked0
Visible results85
CSV template
CodeProductLotLaboratoryStatusCertificate

Supplier traceability

Supplier traceability and certificate delivery

Nexa coordinates supplier orders but does not present itself as the manufacturer. The final order file should identify the legal seller, supplier/manufacturer, origin, dispatch location and the batch-specific document that will be sent with the product.

SupplierVerified legal entity to be inserted before public launch; documentation is currently pending.
Factory relationshipRecord the manufacturer or factory name, country, address or facility identifier and its relationship to the supplier.
Testing at sourceRetain the signed lot-specific identity, purity/assay and applicable quality reports used for release and customer delivery.
Independent retestSend the batch-matched report with the product. Where independent testing is claimed, name the external laboratory and link the exact signed report.
Evidence rule: a general supplier assurance is not a batch CoA. Origin, GMP status, laboratory accreditation, sterility and purity claims require their own supporting records.

Minimum certificate fields

01
TraceabilityProduct name, code, strength, lot number, manufacturer/supplier, test date, and report identifier.
02
Identity and strengthMethod, acceptance criteria, result, units, reference standard, and analyst/reviewer sign-off.
03
Quality attributesPurity plus any applicable residual solvents, water, bioburden/sterility, endotoxin, particulate, or heavy-metal testing.
04
Document integritySigned PDF from the laboratory or an independently verifiable report—not a website-created certificate.
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