ASTM F2621 - Finished Product Testing

Once the arc rating of a fabric or composite is established (see ASTM F1959), a garment can be evaluated in an arc flash exposure as a design test of a finished product using ASTM F2621, Standard Practice for Determining Response Characteristics and Design Integrity of Arc Rated Finished Products in an Electric Arc Exposure. Mannequins for arc testing are not sensored; the garment is hit at the approximate arc rating of the material and the fabric is checked for breakopen, melting and dripping, and shrinkage. The closures on the garment are also checked for functionality. Prior to testing, samples are laundered in accordance with the care instructions or three times at 120F in accordance with AATCC 135 parameters 3, IV, Aiii.