How can I tell whether a test report actually relates to the batch of parts being delivered?

You cannot tell from the test report alone. You confirm it by linking at least four records or marks: the purchase order line, the physical part identity, the batch or lot code on the delivered part or package, and the sample identifier or batch reference in the test report. If any link is missing, the report is unverified for that delivery, not automatically false.

1. Start with the delivery record, not the test report

Check the delivery note or packing list first. For each order line, record the line number, part number, quantity, and any stated batch or lot code.

A batch or lot code is the supplier's production trace marking. It is not the same as a part number.

For a multi-box delivery, do not assume every box contains the same batch. Record the delivery note number and the individual box or pallet identifier if present. A report attached to the whole delivery may only cover some of the parts.

Then identify the part on the outside. Use the model and suffix, serial number if present, nameplate, old part number, and component or housing markings. These identify the part or assembly; they are not a batch trace by themselves.

2. Find the batch or lot code on the delivered part or package

Look for a batch code, lot code, production date code, heat number or supplier trace code. Not every part has all of these, so note exactly what is visible and where.

If you see only a production date code, record it and ask the supplier whether it maps to a batch or lot. A date code may help, but it is not automatically the same as a batch code.

Photograph the label or marking. The photo should show the part number, batch or lot code and any supplier trace identifier together if possible. A photo shows what was observed; it does not prove that the batch was tested.

What the report must contain

The report should state a sample identifier or batch and lot reference. A sample identifier is the marking or code assigned to the material actually tested.

Useful report fields are:

• sample identifier or batch number tested
• part or material description
• test date or date of issue
• the specification, method or acceptance criteria actually referenced
• result and acceptance statement if one is supplied

If the report says 'sample 2409' and the delivered part label says 'lot 2410', there is no demonstrated link. If the report only says 'representative sample', ask the supplier which batch, lot or production period that sample represents.

3. Check whether the sample identifier travels across the multi-box delivery

Some deliveries split one production batch across several boxes. That can be acceptable, but only if the shipping documents show the same batch code for each relevant box or line.

Ask the supplier to confirm the batch definition. For example: 'Does batch X cover all 12 pieces in delivery note Y, or only the pieces marked with lot X?'

Do not invent a sampling threshold or assume one sample automatically covers a certain quantity. Sampling rules depend on the applicable purchase contract, technical specification or manufacturer requirement. If they are not in the supplied documents, request them.

4. Keep five questions separate

Do not let one test report answer all five questions at once. Treat them separately.

Part identity asks whether the delivered component is the part ordered.

Fitment asks whether that part is correct for the machine, considering model, serial number, catalogue revision, documented supersession, old part number and installation position where relevant.

Provenance asks whether the parts came through the stated supply chain.

Sample results ask whether the tested sample met the stated result, according to the actual test method and specification.

Batch acceptance asks whether the sample in the report belongs to the same batch as the delivered parts and whether the delivery records show that link.

A supplier statement such as 'all parts are from the same batch' is useful, but it should be supported by a batch code or trace matrix. A trace matrix is a document that maps delivery lines or part serial numbers to batch numbers and report sample identifiers. If it is not provided, that link remains unverified.

5. Missing link: what to request

If there is a missing link, do not immediately accuse the supplier of a false report. The problem may be an incomplete packing list, a mixed pallet or an internal label that was not transferred to the delivery documents.

Send a short clarification request. Include:

• purchase order number and line
• delivery note number and line
• part number and serial number if present
• batch or lot code shown on the part or package
• report number or sample identifier on the test report
• the question: 'Please confirm whether this test report covers this exact batch and all quantities on this delivery line.'

Ask for a documented trace matrix, certificate addendum or stamped delivery record if the answer is not already available.

6. Procurement decision after the check

If the supplier can show the same batch code on the part, delivery line and report sample identifier, the report is at least linked to that delivery. Whether it is acceptable still depends on the applicable specification, results and acceptance criteria.

If the supplier cannot show that link, do not rely on the report as batch evidence. Depending on the contract and site requirements, you may quarantine the affected parts, ask for another report clearly linked to the exact batch, or reject the delivery line.

The responsible parties decide acceptance using the applicable requirements. A parts information platform cannot certify a batch or authenticate a test report.

7. Parts Matching Support

If you need help preparing a supplier query, MechLink may help organise candidate part and delivery information. It is an external commercial service; it does not authenticate test reports or certify batches.

Prepare the machine model and serial number, old part number if available, component or housing photos, and clear photos of relevant labels or records. For parts information or procurement clarification, the MechLink enquiry channel serving this market is WhatsApp +77026412810. This is not a SANY official contact.

Sources

No external documents, test reports, parts catalogues or standards were inspected for this article. The checks above are general procurement traceability guidance and must be verified against the applicable purchase contract, supplier documents and manufacturer requirements.