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About This Item

 

Full Description

Specifies safety requirements for cap size, ventilated caps (vent area, air flow) and marking. Annex A describes the test for air flow. Caps which do not comply should have the instrument or its packaging labelled with a warning as to the dangers of asphyxiation from pen caps.

 

Document History

  1. ISO 11540:2021


    Writing and marking instruments - Specification for caps to reduce the risk of asphyxiation

    • Most Recent
  2. ISO 11540:2014


    Writing and marking instruments - Specification for caps to reduce the risk of asphyxiation

    • Historical Version
  3. ISO 11540:1993

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    Caps for writing and marking instruments intended for use by children up to 14 years of age -- Safety requirements

    • Historical Version