| Product identity | Exact grade name, product description, and intended polymer or application | Check the current technical data sheet (TDS), safety data sheet (SDS), and product label | Confirm that documents refer to the exact grade being quoted and supplied. |
| Appearance and physical form | Form, color, and other appearance specifications, where stated | Compare the TDS specification with the sample and the incoming-lot inspection record | Do not assume appearance or form; obtain the specification for the offered material. |
| Recommended addition level | Supplier-stated dosage range for the intended formulation | Review the TDS and confirm the range with a controlled trial in the target resin | Actual use level can depend on the polymer, formulation, processing conditions, and desired result. |
| Dispersion and feeding | Compatibility with the planned feed method and mixing process | Run a production-representative trial; inspect dispersion and check for feeding or agglomeration issues | Use the same equipment, resin, and processing conditions planned for production. |
| Surface and processing performance | Application-specific effects, such as surface behavior, slip, or processing stability, if relevant | Compare treated and untreated controls using the same formulation and test conditions | Assess only performance claims relevant to the intended end use; results are formulation-dependent. |
| Coefficient of friction (COF) | Static and/or kinetic COF, when required by the application | Measure using a defined method and record the film or molded-part surface, conditioning, and test settings | Request product-specific results; do not treat an unqualified COF value as universal. |
| Migration and aging behavior | Surface change or performance drift over time, where relevant | Evaluate conditioned samples at defined time intervals and application-relevant temperatures | Test against the intended storage, converting, and end-use conditions. |
| Thermal and process suitability | Fit with the actual processing temperature and residence-time profile | Review available product documentation and conduct a trial under the planned process conditions | Confirm suitability for the process; avoid assuming a universal maximum temperature. |
| Lot consistency | Batch identification and consistency of stated product specifications | Request a certificate of analysis (CoA) for the offered lot and compare it with the agreed specification | Define acceptance criteria before purchase and retain sample and lot records. |
| Regulatory and safety documentation | Current SDS and any application-specific declarations or compliance documents required by the buyer | Review documents for the destination market, intended use, and exact grade | Requirements vary by jurisdiction and application; obtain current documents rather than relying on general claims. |
| Packaging and storage | Pack size, packaging condition, storage instructions, and shelf-life information where specified | Check the product label and current supplier documentation | Confirm packaging suits handling, storage, and transport needs at the receiving site. |
| Supply and commercial readiness | Quoted quantity, lead time, shipping terms, and availability for the required delivery schedule | Obtain a dated quotation and written confirmation of the shipment details | Compare offers using the same grade, quantity, destination, and delivery basis. |