Certificate of Analysis for Spice Exports: What to Check

A Certificate of Analysis is a laboratory report showing test results for a specific sample against a defined set of parameters. It describes the sample that was tested. It is not a guarantee about the whole shipment unless sampling and traceability were handled properly.

That distinction is the main limitation of any COA. Its value depends on the sample being genuinely representative of the consignment, which is why the sampling procedure matters as much as the numbers on the page.

A COA can come from a supplier's in-house lab, an independent third-party laboratory, or a government-recognised testing facility. The more assurance you need, the more reasonable it is to nominate a specific independent lab yourself instead of accepting whichever report the supplier sends.

In-house reports are not worthless, but they are the supplier grading its own work. For higher-value orders or a first shipment with a new supplier, an independent report is the safer basis for approving a lot.

• Parameters tested: do they match the specification you agreed, including the contaminant tests your destination requires?
• Test method: the same parameter can be measured different ways, so the method should be stated.
• Issuing lab and its accreditation status.
• Sample or batch reference: does it match your lot and the numbers on the invoice and packing list?
• Date of testing relative to the shipment date.
• Results against limits: the report should show the limit or specification alongside each result.

Our aflatoxin, pesticide and microbial testing guide explains which contaminant tests typically matter by product and market.

Some buyers ask for a COA before the goods leave India, which leaves room to fix a problem before the container ships. Others rely on testing at destination, or both. Agree which applies, and who bears the cost if a result falls outside specification, in the sales contract rather than after the goods have arrived.

A pre-shipment COA sits naturally alongside a pre-shipment inspection: the inspector draws the sample, and the lab tests it.

If the order is paid by LC, the COA becomes a payment document as well as a quality one. A COA that lists different parameters or units from those in the LC, or comes from a lab the LC does not allow, can be treated as a discrepancy and delay or block payment.

A COA is also only one of several required documents. It does not by itself trigger payment, which depends on the full document set complying with the LC's terms.

Settle the COA's parameters, units and issuing lab at the specification stage, in writing, not at shipment. If the contract or LC names a lab, a substitute report is only safe with the buyer's or bank's written agreement. Late surprises here are the ones that delay document presentation.