Need to review a plant extract HPLC COA before sample approval? Check assay method, marker wording, batch details and specification match first.
Requirements
This B2B guide helps purchasing and QA teams prepare plant extract supplier questions before sending an RFQ. Use the Plant Extract COA Review Checklist as the main working path, then confirm specification, COA, sample and commercial details with the supplier.
For faster supplier review, prepare the botanical source, target marker or extract ratio, assay method, sample quantity, document list, MOQ expectation, packing size and destination market in one request.
Selection Criteria
| Review point | What to confirm | Why it matters |
|---|---|---|
| Marker wording | Confirm the marker name, assay direction and whether the buyer specification uses the same wording. | Marker mismatch can create supplier comparison errors. |
| Method reference | Check HPLC, UV, TLC or buyer-defined method wording. | Method wording affects how COA values should be compared. |
| Batch link | Match sample code, batch number, production date and COA file. | Keeps document review connected to the physical sample. |
| Physical fields | Appearance, color, odor, particle size and flow direction. | Physical fields affect formulation screening and sample approval. |
| Commercial readiness | MOQ, packing size, lead time and destination market. | Commercial fields turn document review into an RFQ path. |
Practical Recommendation
Use a product page when the grade is already clear. Use this guide when the buyer still needs to compare assay methods, sample approval steps, documentation scope or commercial terms across multiple botanical extracts.
Sample Review vs Bulk RFQ
| Dimension | Sample review | Bulk RFQ |
|---|---|---|
| Main purpose | Confirm grade fit, documents and physical behavior. | Confirm supply, packing, lead time and export needs. |
| Buyer input | Application, target marker, sample quantity and document list. | Quantity, MOQ expectation, packing size and destination market. |
| Limit | Does not prove commercial availability without RFQ details. | Should follow sample or document approval when specifications are strict. |
Related Product Pages
- Chlorogenic Acid Supplier – HPLC assay range, COA and sample review.
- Ginkgo Biloba Leaf Extract Supplier – Flavone glycosides and terpene lactones review.
- Marigold Flower Extract Supplier – Lutein or zeaxanthin COA review.
- Quercetin Powder Supplier – Assay method and bulk sample review.
- Rutin 95% Supplier – HPLC COA and specification review.
RFQ Checklist
- Target marker and assay method.
- Specification range and physical fields.
- Sample code and COA batch number.
- Microbiology and heavy metals section.
- MOQ, packing, lead time and destination market.
Related Sourcing Pages
- Plant Extract Supplier hub for category-level comparison.
- Plant Extract COA Review Checklist for the main review path.
- Contact HERBSEA with specification, sample, COA and RFQ requirements.
FAQ
Check marker wording, assay method, batch number, sample link, specification match, microbiology, heavy metals, packing and supplier contact details.
Not always. Buyers should confirm method wording and specification basis before comparing values across suppliers.
Use the Plant Extract COA Review Checklist for document screening, then open the relevant product page for samples and quotation.
Summary
If you are comparing plant extract suppliers, confirm the source, target specification, assay method, COA fields, sample test plan, MOQ, packing and destination market before quotation. A short document checklist keeps supplier comparison faster and easier to audit.
Download or request the Plant Extract RFQ Checklist from HERBSEA.