Green tea extract tea polyphenols projects need marker, assay and COA alignment before sample approval.
Green Tea Extract Tea Polyphenols Specification Guide
This guide helps sourcing and quality teams compare green tea extract tea polyphenols specifications for B2B formulation projects. The Green Tea Extract product page remains the main page for RFQ, sample request, packing and MOQ. This support page focuses on marker selection, assay method, COA fields and document review.
Tea polyphenols, catechins and EGCG may appear in the same sourcing conversation, but they should not be handled as identical quote lines. Buyers should define the target marker and result format before comparing suppliers.
Tea Polyphenols Specification Fields
| Field | What to confirm | Buyer note |
|---|---|---|
| Marker target | Tea polyphenols, catechins, EGCG or buyer-defined marker. | Defines the suitable grade. |
| Assay method | Ask how the marker is tested and how results are reported. | Supports document comparison across suppliers. |
| COA fields | Batch number, result values, specification limits and quality fields. | Connects the sample to the document package. |
| Caffeine direction | Confirm whether caffeine range matters for the finished project. | May affect grade selection and support pages. |
| Physical parameters | Appearance, particle size, moisture, flowability and packing notes. | Supports capsule, tablet, powder blend and beverage trials. |
| Commercial fit | Sample quantity, MOQ, lead time, packing size and destination market. | Connects quality approval with purchasing planning. |
Tea Polyphenols vs Catechins vs EGCG
| Target | Best page | Document focus |
|---|---|---|
| Tea polyphenols | Green Tea Extract product page. | Polyphenol marker, assay result and broad extract specification. |
| Catechins | Catechins COA specification guide. | Catechin marker, COA fields and sample approval. |
| EGCG 98% | EGCG 98% HPLC COA guide. | High-purity EGCG assay and batch document trail. |
RFQ Checklist for Tea Polyphenols
- Target marker and expected result format.
- Application format: capsule, tablet, powder blend, beverage or functional food project.
- Caffeine direction and any required physical parameters.
- Required documents: specification, COA, packing information and questionnaire.
- Sample quantity, destination market, packing preference, MOQ expectation and annual volume.
Marker Decision
Start Broad with Green Tea Extract, Then Narrow to Catechins or EGCG When Needed
Use the Green Tea Extract supplier page for RFQ. If the marker is catechin-specific, review the catechins COA guide; if it is EGCG 98%, use the EGCG 98% guide.
FAQ: Green Tea Extract Tea Polyphenols
Check the marker target, assay method, result format, batch COA, caffeine direction, physical parameters and required quality fields before sample approval.
They are related but not always the same RFQ. Buyers should state whether the project needs tea polyphenols, catechins, EGCG or another marker target.
Use the Green Tea Extract product page for the RFQ path and this guide for tea polyphenols specification review.
If the brief names high-purity EGCG, use the EGCG 98% page or guide separately from a broad tea polyphenols specification.
Request Tea Polyphenols Specifications
To request green tea extract tea polyphenols sourcing support, share the target marker, assay expectation, application format, document needs, sample quantity, packing preference and annual volume. Contact HERBSEA for COA, specification, sample and quotation details.