• EN ISO 15384

    The Radiant Heat Transfer test is done when the garments are new and after minimum 5 washes.

    RHTI Radiant Heat Transfer Index
    RHTI24 ≥ 11 s
    RHTI24 – RHTI12 ≥ 4 s
    Transmission factor TF ≤ 70%

    RHTI24: 2nd degree burn time in seconds
    RHTI24 – RHTI 12: reaction/ escape time

Other requirements:

  • 0.13m² or 0.2m² fluorescent minimum reflective surface required
  • Ret: Resistance to water vapour EN 31092 must be ≤ 10m²Pa/W
  • Rcr: Thermal resistance EN 31092 ≤ 0.055m² K/W
  • Heat resistance 5 minutes at 260°C: shrinkage ≤ 5% without ignition, without fusion