Curcumin / turmeric extract · Buyer guide
Curcumin 95% extract specification: buyer checklist
A curcumin 95% extract specification should clarify whether the supplier means total curcuminoids or an individual compound. Do not assume that a familiar commercial name defines the analyte. Resolve the identity and assay wording before requesting comparable quotes.
By CleanIngredients · Updated 2026-11-15
Free inquiry, reviewed by CleanIngredients. Availability is not guaranteed.
| Item | Specification | Buyer check |
|---|---|---|
| Standardization | Individual curcumin or total curcuminoids | Request named compounds and method |
| Process | Extraction solvents and further processing | Request grade-specific process disclosure |
| Lot documents | Specification, COA, and traceability | Match the sample and intended order |
Specify the analytical target
Write the analyte, minimum result, units, and method into the purchasing brief. If the material is standardized to total curcuminoids, ask which compounds contribute to the total and how they are reported. Keep an individual curcumin result separate. Do not substitute a supplier’s marketing headline for the technical specification.
Check whether the assay is reported on a dry basis or another basis and whether the method is comparable with the reference material used during your product development. Ask for clarification of any unexplained abbreviation. A numerical comparison becomes useful only once the measurement definitions match.
Request a complete technical package
Ask for the botanical species, plant part, process flow, extraction solvents, and any carriers or other added materials. For a formulated preparation, request its full composition and application instructions. A preparation intended to disperse differently may not be interchangeable with the original extract, even if both contain curcuminoids.
Request the lot-specific COA and the testing information your quality team needs for its specification review. Identify methods, units, limits, and actual results rather than collecting a folder of unlabeled certificates. Keep the sample’s lot number visible through receiving, testing, and the application trial so the evidence remains connected.
Turn an offer into a comparable sourcing record
Capture the quantity break, package size, currency, freight responsibility, destination, lead time, and date the price expires. Ask whether the supplier is quoting stock or a future manufacturing run. Include sample and shipping charges explicitly; a free request through CleanIngredients does not mean the supplier’s sample or freight is free.
Ask separately for evidence of Chinese cultivation and Chinese manufacturing at the named site. A supplier’s export history or office address does not establish the origin of this grade. The directory’s eligibility rules preserve that distinction, and an unresolved answer remains unresolved rather than becoming an implied endorsement.
Use the RFQ builder to prepare a document request and the two cost tools to organize your assumptions. The tools do not select a supplier or approve a material. If the directory has no confirmed match, the sourcing form lets you describe the requirement to CleanIngredients without representing that a quote or supply commitment exists.
Before requesting a quote
- 95% analyte explicitly defined
- Method and reporting basis
- Complete composition and process
- Lot-specific documents
- Origin evidence and dated commercial terms
Evidence and editorial scope
Botanical and process distinctions come from the Curcumin / turmeric extract source review. The document requests and comparison workflow are CleanIngredients’ editorial purchasing guidance. They do not establish supplier approval, product safety, or regulatory suitability. Read the directory methodology.