Division 3.1.1

The foam flesh for the test impactor shall be stored for a period of at least four hours in a controlled storage area with a stabilised humidity of 35 ± 10 percent and a stabilised temperature of 20 ± 2 °C prior to impactor removal for calibration. The test impactor itself shall have a temperature of 20 ± 2 °C at the time of impact. The temperature tolerances for the test impactor shall apply at a relative humidity of 40 ± 30 percent after a soak period of at least four hours prior to their application in a test.