ISO 1997:2018 PDF

Overview

ISO 1997:2018 - "Granulated cork and cork powder - Classification, properties and packing" defines how granulated cork and cork powder are classified and described prior to pressing, and specifies accepted packing methods. The standard ensures consistent reporting of granule size, bulk density, moisture and cork powder content, and sets basic marking and packing requirements for bales, bags and boxes.

Key topics and requirements

• Classification
  • By granule size: determined via mechanical sieving (see ISO 2030 procedures) and expressed as the aperture range between upper and lower sieves.
  • By bulk density: six groups based on apparent bulk density (measured per ISO 2031): 40/50, 50/60, 60/80, 80/100, 100/120, >120 kg/m³.
• Designation
  • Products are designated by granule size (max/min) and bulk density (example: Granulated 1/2 - 40/50).
• Properties
  • Moisture: described as commercially dry when moisture