Overview
ISO 2385:2020 specifies a standardized sampling method to determine the moisture content of packed cork. Applicable to virgin cork, raw reproduction cork, burnt cork, boiled reproduction cork and raw cork waste, this fourth edition (2020) streamlines sampling while maintaining representativeness. The document supports consistent quality control, contractual compliance and reliable laboratory testing across the cork supply chain.
Key Topics
- Batch handling and uniformity: All packages in a batch must be identical and contain the same cork type and, where applicable, the same grouping by thickness/quality.
- Time constraint: No more than 24 hours may elapse between determining the initial total mass of the batch and taking the laboratory samples.
- Minimum sampling scope:
- Count total number of packages in the batch and determine the total initial mass (packages included) by direct weighing.
- Select randomly at least 5 packages with a combined mass of at least 60 kg.
- From opened packages, collect a random, equal number of cork pieces or parts to obtain approximately 30 kg of cork for testing.
- If only part of a cork piece is sampled, ensure the portion is representative of the whole piece for moisture content.
- Laboratory samples: Divide the approx. 30 kg into two similar laboratory samples, place them in hermetically sealed, identified containers. One sample is used for testing; the other is retained for control purposes.
- Documentation: A detailed sampling report must accompany the sampling and include product designation, batch number, supplier/customer, counts and masses, dates, sampling location, responsible entity, incidents, and reference to ISO 2385:2020.
Applications
This standard is essential for stakeholders involved in cork production, processing, trade and quality assurance:
- Quality control labs determining moisture content for process control and product specification.
- Manufacturers and packers ensuring batch representativeness before drying or treatment.
- Buyers and inspectors using a standardized sampling method for contractual acceptance and dispute resolution.
- Exporters and storage managers monitoring moisture to prevent spoilage or dimensional changes during transit.
Related Standards
- ISO 633 - Cork - Vocabulary: provides terminology used throughout ISO 2385:2020.
- ISO/IEC Directives (editorial rules) referenced for document preparation and maintenance.
By following ISO 2385:2020, organizations achieve repeatable, defensible sampling for moisture determination of packed cork, improving test reliability and facilitating trade and compliance across the cork value chain.