ISO 17727:2012

Cork - Cork stoppers for still wine - Sampling plan for the quality control of cork stoppers

ISO 17727:2012 describes the quality control sampling plans for the receipt and shipping of ready-to-use cylindrical stoppers (flush with cork mouth finish) in semi-worked or finished cork used for still wines.

These sampling plans apply to the following parameters, for which a standardized analysis method is available. These are the parameters which are applicable to:

• physical tests: dimensions, mass and apparent density for agglomerate cork stoppers, moisture content, dimensional recovery after compression, extraction force, liquid tightness and dust content (see ISO 9727);
• chemical tests: analysis of oxidizing residues (see ISO 21128);
• microbiological tests: enumeration of colony-forming units of yeasts, moulds and bacteria capable of growth in an alcoholic medium (see ISO 10718);
• sensory analysis (see ISO 22308);
• the analysis of releasable 2, 4, 6-trichloroanisole (TCA) (see ISO 20752).

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