TECHNICAL GUIDE / 2026-10-02
Short answer. Evaluate the supplier against your process specification: exact product identity, traceable PDS and batch report, sample consistency, response to deviations and commercial delivery terms. Avoid relying on general capacity claims alone.
Check product identity first
Ask whether the quotation names the exact family and model: F or P grit, a refractory fraction, fine powder or a custom processing route. The page, PDS, sample label and commercial documents should use the same identity. A supplier unable to distinguish F36 from P36 or 1–3 mm grain from fine powder creates procurement risk before performance is even tested.
Request the proposed chemistry, size distribution, physical and packing limits in writing. Compare them to your existing specification. Published catalog ranges are useful for screening but do not replace the agreed order document.
| Evidence | What to verify | Decision |
|---|---|---|
| Product page / PDS | Exact model and revision | Identity |
| Sample / batch report | Traceable lot and test method | Conformance |
| Trial record | Process and acceptance result | Suitability |
| Quote | Quantity, packing, lead time | Supply fit |
Test repeatability and communication
Run a controlled trial using the workpiece or formulation that matters to the buyer. Record the source batch, settings and result. If the first sample works, ask how subsequent batches will be tested and reported against the agreed limits.
Discuss what happens when a batch is outside specification or a process change is proposed. The response should identify the affected material, verification steps and agreed resolution. This is more useful than an unsupported claim that every batch is identical.
Selection guidance
Send several suppliers the same technical RFQ and compare responses line by line. Request sample quantity, batch documentation, packaging details and a named contact for technical questions before placing a repeat order.
Common mistakes
- Comparing quotations for different grades as if they were the same product.
- Approving a supplier from a catalog page without a process trial or batch documentation.
Frequently asked questions
Is a PDS enough to qualify a supplier?
No. It is a starting document; qualification also needs an agreed specification, sample trial and batch documentation.
Should price be compared before technical equivalence?
First ensure the quoted materials match the same technical requirement, then compare price and delivery terms.
