Overview
ISO 18538:2015 - Traceability of molluscan products specifies the information to be recorded in farmed molluscs supply chains (excluding cephalopods) to establish product traceability from farm to retailer or caterer. The standard defines how molluscan products traded for human consumption are to be identified, what information each food business must generate and retain, and how trade units and logistic units should be managed. It is applicable to the full distribution chain for farmed mussels, oysters, scallops, clams, cockles and abalone (farm, hatchery, depuration, processing, transport, wholesale, retail, catering and feed production).
Key topics and technical requirements
- Unique identification of units: Trade units (TU) and logistic units (LU) must be labelled with unique identifiers (UTUI and ULUI). These can be globally unique (e.g., GS1 SGTIN, SSCC) or unique within an agreed scope.
- Information recording: Each business that physically trades or transforms units must generate and keep specified information tied to the unit IDs so products can be traced through the chain.
- Pragmatic traceability: The standard recognises mixing and grouping (grading, processing) are commercially necessary; it requires traceability from the point where unique identification is possible and recording of parent/child relationships between created and received units.
- Sector-specific processes: Requirements cover controlled relaying, depuration, shucking/processing, hatcheries/nurseries, broodstock and seed suppliers, farms, transport and storage, traders/wholesalers, retailers/caterers, and feed producers.
- Data formats and interoperability: ISO 18538 is designed for electronic data representation but supports paper systems; it references ISO 8601 for date/time formats and is compatible with GS1 identifiers and industry data standards.
Practical applications
- Support for food safety and recall management by enabling rapid identification of affected batches.
- Basis for audits and certification of traceability in aquaculture and molluscan processing.
- Improved supply chain transparency for buyers, regulators and consumers.
- Operational use by processors and logistics partners to maintain chain visibility during depuration, relaying and grading.
- Integration into digital traceability platforms, ERP systems and labeling/packaging workflows.
Who will use this standard
- Aquaculture farmers, hatcheries, broodstock and seed suppliers
- Processors, depuration facilities and shucking operations
- Transporters, cold-store operators, traders and wholesalers
- Retailers, caterers, regulators and certification bodies
- IT providers building traceability and supply‑chain solutions for molluscan products
Related standards
- ISO 8601 (date/time formats) - normatively referenced
- ISO 9000 (traceability concepts) - traceability definitions and principles
- GS1 system identifiers (GTIN, SGTIN, SSCC, GLN) - commonly used for global unique IDs in supply chains
Keywords: ISO 18538:2015, traceability of molluscan products, farmed molluscs, supply chain traceability, UTUI, ULUI, depuration, relaying, GS1.
Open preview (PDF)Traceability of molluscan products — Specifications on the information to be recorded in farmed molluscan distribution chains
