Description
COA-BACKED BOTANICAL INGREDIENT
Quercus robur L. Leaf Extract
English Oak Leaf Extract Powder 4:1 is presented for B2B ingredient qualification using representative batch evidence and batch-specific analytical language.
COA-Backed Specification
| Botanical identity | Quercus robur L. |
|---|---|
| Plant part | Leaf |
| Form and colour | Fine brown powder |
| Assay | Extract ratio 4:1 by TLC; result 4:1 |
| Particle size | 98% through 80 mesh |
| Loss on drying | <=5.0%; result 4.95% |
| Ash | <=5.0%; result 4.32% |
| Representative batch | LXXL170902 |
| Manufacture date | 2 September 2017 |
| Shelf life | Two years when stored properly |
Representative values do not replace the current shipment COA.
Buyer Decision Guide
Compare this Extract ratio 4:1 by TLC; result 4:1 ratio grade by botanical identity, plant part and physical specification; the ratio is not an active-marker percentage.
- Evaluation sample typically 10-20 g
- Regular MOQ typically 1 kg
- Typical lead time 7-15 working days
How This Grade Differs
English Oak Leaf Extract Powder 4:1 is qualified using botanical identity: Quercus robur L.; plant part: Leaf; offered grade: Extract ratio 4:1 by TLC; result 4:1. Its purchasing definition is the stated ratio grade (Extract ratio 4:1 by TLC; result 4:1), not a guaranteed active-compound concentration.
When an alternative to English Oak Leaf Extract Powder 4:1 is required, compare it against this page’s identity, grade and batch-document requirements.
Browse ingredients related to English Oak Leaf Extract Powder 4:1
For a English Oak Leaf Extract Powder 4:1 substitution review, match botanical identity, plant part, grade-defining assay or ratio, analytical basis, physical form and offered-lot documentation.
Quality and Documentation
Representative batch LXXL170902 supports the specification table above. Confirm current batch results before release; the representative record remains supporting context rather than a shipment guarantee.
Frequently Asked Questions
What specification defines English Oak Leaf Extract Powder 4:1?
For English Oak Leaf Extract Powder 4:1: Extract ratio 4:1 by TLC; result 4:1.
What botanical details should buyers match?
For English Oak Leaf Extract Powder 4:1: Use Quercus robur L., Leaf as the identity checkpoint, then confirm that the sample and commercial documents describe the same material.
Which batch document controls shipment approval?
For English Oak Leaf Extract Powder 4:1: The page cites representative batch LXXL170902. Use it as an example of the tested grade, not as the release record for a future shipment.
When should buyers request the current COA?
For English Oak Leaf Extract Powder 4:1: Request the current COA before issuing approval so the offered lot can be checked against the agreed identity, grade and limits.
Which controls should be reviewed for this grade?
For English Oak Leaf Extract Powder 4:1: Technical acceptance should cover identity, grade-defining data, physical quality and the safety tests required for the intended market.
What supply details require quotation-stage confirmation?
For English Oak Leaf Extract Powder 4:1: The quotation should state the applicable MOQ, pack format and lead time after current inventory and testing needs are reviewed.
Can selected physical attributes be discussed?
For English Oak Leaf Extract Powder 4:1: Discuss pack format and relevant physical parameters before quotation; feasibility and any MOQ effect are confirmed for the exact request.
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