A specimen is subjected to a flame under different conditions. Its burning behavior is observed.
Test method
• The specimen shall be pretreated: at first it has to be washed or dry cleaned 5 times, then conditioned in the oven and put in the desiccators before performing the actual test.
• The specimen has to be tested according to the scheme below and according to its weight.
1. 45° micro or meker burner test
The specimen is placed in the test chamber and heated for 1 or 2 minutes. Flaming and smouldering behavior is observed, charred area is measured.
2. 5% loose test
The specimen is placed in the test chamber and heated for 1 or 2 minutes. Charred area is measured.
3. 45° coil test
Insert the specimen into the coil. Suspend the coil with the specimen at an angle of 45°. Adjust the flame so that its top touches the lowest end of the specimen. Heat the specimen until it stops to burn. Readjust the flame and repeat the procedure until a reference point is reached. Measure the number of flame applications needed to reach this point.
Result
A material passes this test if:
During the 45° micro or meker burner test the afterflame does not exceed 3s, the afterglow does not exceed 5s and the charred area is less than 30cm².
During the 5% loose test the charred length does not exceed 200mm.
During the 45° coil test the number of flame contacts is not less than 3.
