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EN 20471

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EN 20471

EN 20471 – Protection for High-Visibility Workwear

Overview
EN 20471 specifies the requirements for high-visibility clothing capable of visually signaling the user’s presence in any light condition, day or night. This standard applies to garments and fabrics designed to increase visibility in hazardous environments.

Testing Methods & Minimum Performance Levels

Test Method Description Requirements Min. Performance Level
ISO 105-B02 Colour Fastness to Light Measures how well fluorescent fabric resists fading
  • Grade ≥ 4
  

Additional Mechanical & Dimensional Tests

Test Method Description Requirements
ISO 6330 Domestic Laundry Durability
Determines shrinkage or growth of the fabric after domestic laundering.		 Colour retention

  • Yellow   ≥70
  • Orange  ≥40
  • Red        ≥25
ISO 15797 Industrial Laundry Durability

Test under harsher industrial wash cycles

 Colour retention

  • Yellow   ≥70

·         Orange  ≥40

  • Red        ≥25
EN ISO 105-C06 Colour Fastness to Washing

(Detergents)

 ·         Discharge ≥ 4

·         Colour degradation ≥ 4–5
ISO 13934-1 Tensile Strength (Strip Method)
Measures the maximum force needed to break a strip of fabric in warp and weft directions.
  • Warp: ≥ 400 N
  • Weft: ≥ 400 N
ISO 11092 Thermal and Water Vapour Resistance
  • Ret ≤ 5 m²·Pa/W

Industries

  • Oil, Gas and Petrochemical Industry
  • Construction and Heavy Industry
  • Railways and Transportation
  • Police and Law Enforcement
  • Electric and Utility Services
  • Maritime and Offshore
  • Industrial FR Workwear
  • High-Visibility Workwear