ASTM F2621


Once the arc rating of the fabric is established a garment can be evaluated for arc exposure. Before testing, samples are laundered three times and dried once in accordance with AATCC TM 135. The garment is exposed to an arc flash at approximately the level of the arc rating of the fabric. The fabric is checked for breakopen, afterflame, melting/dripping and shrinkage. The closures (zippers, buttons, snaps, hook and loop) are checked to make sure that they did not break open and are still operable.

Garment Sample Requirements

Size: XL (European) or Large (US)
Chest: 42 inches or 106 cm
Waist: 34 inches or 86 cm

Single Layer: 2 garments
Multi-layer: 3 garments

Get Started

Please download and fill out the Test Form (XLS) and email it to To ensure your samples are added to the testing schedule, print the form and enclose it with your shipment.

Shipping Address

Attn: Hugh Hoagland
3018 Eastpoint Parkway
Louisville, KY 40223
United States


After your ASTM F2621 testing is complete, we will send you an email with the Arc Rating results. Within a few weeks, we will send you another email with the full test report. You will receive a user name and password for our web site, You can log on to download test reports and the raw data, photos and videos from your tests.