A phosphatidylserine supplier should be evaluated as a qualification partner, not only by the lowest quoted price. The core checks are source traceability, assay method, batch consistency, oxidation control, document readiness, manufacturing capability, and responsiveness to application questions.
Supplier evaluation checklist
| Evaluation area | What the buyer should ask | Evidence to record | Decision |
|---|---|---|---|
| 1. Source traceability | What is the lecithin source, product route, lot reference, and quoted grade? | Current specification and source statement. | Pass / Hold |
| 2. PS assay method | What method, limit, and current batch result support the stated PS content? | Method, acceptance limit, and matching COA result. | Pass / Follow up |
| 3. Batch-to-batch consistency | Can the supplier explain release criteria and retain current batch records? | Representative and current batch documents. | Pass / Hold |
| 4. Oxidation control | What peroxide-value limit, storage control, and packaging protection apply? | Limit, current result, packaging, and storage instruction. | Pass / Follow up |
| 5. Heavy metal testing | Which limits and test results are included for Pb, As, Hg, Cd, or other required metals? | Current limits, method, and batch result. | Pass / Hold |
| 6. Microbiological testing | Which plate count, yeast/mold, pathogen, and Salmonella controls apply? | Current microbiology section of the COA or report. | Pass / Hold |
| 7. Allergen documentation | Are source-specific allergen, GMO, and processing-aid statements available? | Signed current statements for the quoted source. | Pass / Follow up |
| 8. Regulatory documentation | Which production, food-facility, Halal, Kosher, or destination-market files apply? | Document scope, validity, and product applicability. | Pass / Follow up |
| 9. Manufacturing capability | Who manufactures the material, and what process, quality, and capacity information is available? | Controlled company identity, product scope, and capacity response. | Pass / Hold |
| 10. Sample / pilot support | Can the supplier provide a sample, sample COA, and technical response for the intended format? | Sample identity, lot, documents, and pilot conditions. | Pass / Follow up |
| 11. Commercial MOQ | What is the MOQ by grade, source, package, and destination? | Written quotation or commercial terms. | Pass / Follow up |
| 12. Lead time | What is the normal and first-order lead time after document approval? | Written production and shipment timeline. | Pass / Follow up |
| 13. Packaging | What net weight, liner, palletization, labeling, and storage conditions apply? | Packaging specification and shipment confirmation. | Pass / Follow up |
| 14. Change control | How are source, process, specification, site, or packaging changes communicated? | Change-notification process or written supplier response. | Pass / Hold |
| 15. COA verification | Does the COA identify the same product, source, grade, lot, test basis, and dates as the quotation? | Matched batch-specific COA and release record. | Pass / Hold |
How to score a supplier
Use a simple pass, hold, or follow-up decision for each area. A supplier can remain on the shortlist while evidence is pending, but a missing current specification, unclear source, failed critical test, or unmatched COA should remain a hold before commercial approval. Record the document date and owner for every follow-up.
- Define the target source, PS grade, application, destination market, and annual volume.
- Request the current specification and ask which test methods support each critical parameter.
- Compare a sample COA with the specification and confirm that the product name, source, lot, and grade match.
- Check packaging, storage, MOQ, lead time, sample support, and change-control expectations.
- Record open questions and obtain written confirmation before the pilot or purchase order.
Documents to request before qualification
- Current controlled specification
- Batch-specific COA or a clearly identified representative sample
- Source, allergen, and GMO statements where required
- Packaging, storage, shelf-life, MOQ, and lead-time details
- Applicable production, Halal, Kosher, or market-specific files
- Sample and technical-support terms for the intended application
The Quality & R&D page, PS powder specifications guide, and technical document request form provide the next steps for a product-specific review.
Ready to qualify a PS route?Request a current document package
Recommended next steps
- Review the Phosphatidylserine product page.
- Compare Soy PS and Sunflower PS.
- Check manufacturing proof and Quality & R&D.
Contact sales for product documents
Share source preference, application, country, and annual quantity.
Contact Sales