ISO 6887-3:2017

Overview

ISO 6887-3:2017 - part of the ISO 6887 series on microbiology of the food chain - provides specific rules for preparing fish and fishery product samples for microbiological examination when procedures differ from the general rules in ISO 6887‑1. Published in 2017, this standard focuses on sample preparation, the production of the initial suspension and decimal dilutions, and includes special sampling rules for raw bivalve molluscs, tunicates and echinoderms from primary production areas.

Key topics and technical requirements

• Scope and applicability
  • Applies to raw, processed and frozen fish and shellfish, including whole fish, fillets, crustaceans, cephalopods, bivalve and gastropod molluscs, tunicates and echinoderms.
  • Intended primarily for hygiene testing (muscle tissues) and quality control.
• Sample preparation principles
  • Used in conjunction with ISO 6887‑1 (general rules); ISO 6887‑3 covers cases needing different preparation methods.
  • Excludes sample preparation where other standards provide specific procedures (e.g., ISO/TS 15216‑1 and 15216‑2 for hepatitis A and norovirus detection).
• Sampling from primary production
  • Special procedures and transport/temperature control requirements for sampling live bivalve molluscs, echinoderms and tunicates from marine production areas.
  • Emphasizes documented sampling plans, species selection and spatial/temporal sampling design for monitoring and official controls.
• Apparatus and materials
  • Lists laboratory equipment and tools such as rotary or peristaltic homogenizers, sterile dissecting instruments (oyster knives, scalpels), sterile forceps, brushes, drills and food‑grade sampling containers.
• Product‑specific procedures
  • Detailed guidance for different product types: whole fish (various sizes), fillets, cephalopods, shelled crustacea, processed (smoked, cooked, dried, fermented, marinated) and frozen formats.
• Annexes
  • Classification of major taxa (Annex A), recommended numbers of individual live bivalves for laboratory submission (Annex B), and guidance for small fish, crabs and lobsters (Annex C).

Practical applications and users

ISO 6887-3:2017 is used by:

• Food microbiology laboratories preparing samples for enumeration and hygiene testing
• Seafood processors and QA/QC teams establishing routine sampling and laboratory transfer procedures
• Regulatory bodies and inspection authorities conducting official controls and marine production area monitoring
• Research organizations studying seafood safety and microbial contamination patterns

Benefits include consistent, reproducible sample preparation, better comparability of microbiological results, and clear guidance for seafood-specific sample types.

Related standards

• ISO 6887‑1 (general rules for initial suspension and dilutions)
• ISO 7218 (general microbiological laboratory requirements)
• ISO/TS 15216‑1 and ISO/TS 15216‑2 (viral detection - hepatitis A and norovirus) - excluded for preparation where they apply
• ISO 13307 and ISO/TS 17728 (sampling guidance referenced for broader contexts)

Keywords: ISO 6887-3:2017, microbiology of the food chain, fish and fishery products, sample preparation, initial suspension, decimal dilutions, bivalve molluscs, seafood testing, homogenizer, hygiene testing.