In order to achieve the CE-certification, protectors need to undergo the Energy Transmission Test, which measures the amount of force that is allowed to pass through the protector after impact.
In all tests, the protector is placed on an anvil after which it gets hit with a drop striker weighing 5 kilograms (11 lbs.) that falls from approximately one meter, this to make sure the kinetic impact energy is at least 50J. As the primary goal of a protector is to prevent energy from passing through, the lower the value of energy transmission measured the better the shock absorption of the protector.
In order to pass the test, energy transmission is calculated according to two mandatory impact tests:
Ambient Impact Test
No less than three protectors get tested in three different, predetermined “zones of protection” for the ambient impact test, making it a grand total of nine impacts before the ambient impact test is completed. Before testing, the protectors are conditioned by putting them 48 ± 0.5 hours in an atmosphere of 23 ± 2 degrees Celsius and a relative humidity of 50 ± 5%. The ambient impact test needs to be performed within three minutes after removing the protector from their conditioned environment.
Wet Impact Test
In this test, two protectors get tested on the aforementioned three zones of protection, the difference is in the conditioning of the protectors. They are put in a closed chamber above water for 72 ± 0.5 hours, maintained at a temperature of 70 ± 2 degrees Celsius. After this, they are placed in a tightly closed, water vapor proof bag in ambient temperature of 23 ± 2 degrees. After removing the protectors from conditioning, the wet impact test is performed within five minutes.
High and Low Temperature Impact Tests
In addition to the mandatory impact tests, there are two optional tests for the protectors; the High (T+) and Low (T-) Temperature Impact Tests.