Description
MARINE-DERIVED INGREDIENT
Oyster extract concentrate — Concentration 20% on solid basis
Oyster extract concentrate is supplied as a Slightly viscous amber-grey liquid B2B ingredient for further processing. Produced by our audited marine-ingredient partner facility and supplied under LongBio batch documentation. Batch identity, specification and COA are matched across the quotation.
COA-Backed Specification
| Identity | Crassostrea gigas (Pacific oyster) |
|---|---|
| Form and colour | Slightly viscous amber-grey liquid |
| Assay | Concentration 20% on solid basis |
| Method | Refractometry and gravimetric |
| Solid content | 20% +/-1% |
| Appearance | Clear to slightly opalescent liquid |
| pH (as supplied) | Within the approved specification range |
| Density | Within the approved specification range |
| Preservation | No preservative added unless agreed in writing |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Representative batch | LXHY260605 |
| Manufacture date | 5 Jun 2026 |
| Shelf life | Two years when stored properly |
Representative values do not replace the current shipment COA.
Buyer Decision Guide
Specify Oyster extract concentrate by the declared basis, the delivered form and the certificate of analysis. For this grade the basis is Concentration 20% on solid basis and the delivered form is Slightly viscous amber-grey liquid. Confirm the destination market requirements, the intended use category and the required documentation before approval. This material is offered as an industrial raw material for further processing, not as a finished consumer product, and no health or medical claim is made.
- Declared basis and delivered form stated on the specification
- Documentation supplied: batch COA, specification sheet and agreed third-party testing
- Species and origin stated on the certificate; substitution requires written confirmation
- Destination market and intended use to be confirmed at quotation stage
- Samples available for evaluation against your own process
How This Grade Differs
Oyster extract concentrate is listed as a liquid Crassostrea gigas (Pacific oyster) ingredient with 20% solid content measured by refractometry and gravimetry. Compare the linked 10% and 30% liquid concentrates on the same solids basis. Confirm the current batch documents before substitution.
Compare these related grades before approval:
For a substitution review, compare marine species, liquid or dry form, declared solid-content basis, analytical method and the current offered-batch COA.
Application Areas
Discuss the intended liquid formulation and processing conditions with the supplier before selecting this concentrate.
Packaging and Delivery
Request the available pack sizes, evaluation sample, minimum order quantity and lead time for the offered lot in the quotation.
Quality and Documentation
Representative batch LXHY260605 supports the specification table above. Use the cited record for preliminary comparison and request the offered-lot COA for final technical approval. Batch COA, specification sheet, agreed third-party testing and export documents are available for buyer verification.
Frequently Asked Questions
What do you declare for moisture and ash?
Both are released against the limits on the approved specification; the measured result for your lot appears on its COA.
What is the declared source material for this grade?
Crassostrea gigas (Pacific oyster), as recorded on the specification and the batch certificate.
How should the material be stored after arrival?
Two years when stored properly. Keep the pack sealed; observe the handling guidance on the specification.
How is appearance checked?
Clear to slightly opalescent liquid, compared against a retained sample from the approved batch.
What links the quotation to the delivered material?
The specification figure (Concentration 20% on solid basis) and the batch number LXHY260605 carry through from quotation to certificate.
Can I get a sample before placing the order?
Yes. An evaluation sample is normally available before a formal order. Sample quantity, courier account and destination are confirmed at the time of request.
What is the minimum order quantity?
The regular MOQ is typically 1 kg. An evaluation sample of 10-20 g can usually be arranged before a formal order, subject to stock.
Are you a manufacturer or a trading company?
LongBio is Shaanxi Longsheng Biotechnology Co., Ltd., a direct manufacturer of botanical extracts and functional ingredients integrating R&D, production and export support. Factory review can be arranged by video or an on-site visit.
Request COA, Sample or Quotation
Send your target specification, application, order quantity, destination country and required test limits.
Get the current batch COA, a sample or a quotation
