| Product specification | Check whether the oligomer’s chemistry and stated properties fit the intended application, such as UV-curable coatings, inks, or adhesives. | Current technical data sheet (TDS) showing the product description, recommended use, and specified test methods. | Compare products only when the test methods and measurement conditions are comparable. Confirm suitability with application testing. |
| Batch consistency | Review lot-to-lot variation in agreed properties, for example viscosity, color, acid value, or functionality where specified for the product. | Certificates of analysis (COAs) from multiple recent production lots, with results and acceptance limits. | Check whether the COA limits match the specification and whether the supplier can explain out-of-specification handling. |
| Application performance | Compare cure response and finished-product performance under the buyer’s formulation and process conditions. | Representative samples, application guidance, and test data relevant to the intended use. | Run side-by-side trials using the same formulation, equipment, substrate, and curing conditions. Do not rely on a TDS alone. |
| Quality management | Assess documented controls for production, inspection, nonconformities, and corrective actions. | Quality-system certificate, where applicable, plus information on lot identification, change control, and complaint handling. | Verify certificate scope and validity. A quality-system certificate does not by itself prove that a specific product meets the buyer’s requirements. |
| Safety and regulatory documentation | Confirm that hazard, transport, and regulatory information is appropriate for the destination market and planned use. | Current safety data sheet (SDS), product composition or regulatory statements as applicable, and transport classification information. | Have the buyer’s EHS or regulatory team review the documents for the importing country and intended application. |
| Total delivered cost | Compare more than the quoted price per kilogram: include packaging, freight, insurance, duties, handling, and any applicable fees. | Written quotation with currency, Incoterms® rule and named place, packaging details, and quotation validity. | Calculate: total landed cost ÷ usable quantity received. Compare quotations on the same delivery basis and order quantity. |
| Minimum order and packaging | Check whether minimum order quantity, pack size, and packaging material suit consumption, storage, and handling requirements. | Written MOQ, standard pack sizes, packaging specifications, and storage recommendations. | Include the cost and risk of unused material, storage capacity, and shelf-life limits when assessing a low unit price. |
| Lead time and delivery reliability | Compare quoted production and transit lead times, available inventory, and the process for handling delays. | Written lead-time estimate, shipment terms, order status process, and historical delivery records if available. | Ask whether the quoted time is for production, dispatch, or delivery, and confirm the destination and shipping route. |
| Technical support | Assess access to product-selection help, troubleshooting, and support during sample evaluation or production trials. | Named technical contact or team, support scope, and agreed response expectations. | Submit a representative technical question before purchase and assess the clarity and usefulness of the response. |
| Traceability and change communication | Check whether the supplier can trace batches and communicate material or process changes that may affect performance. | Sample batch-label information, traceability procedure, and written change-notification policy. | Agree in advance how changes to specifications, raw materials, or manufacturing location will be communicated. |