DRIPPING TEST APPARATUS
Model PolyNorme 505
The dripping test according to NF P 92-505 is a reaction to fire complementary test for M classification of building and fitting materials.
It is used for thermalmelting materials for which some inflamed or not dripping, produced by a heating source, were noticed during the main test.
This one can be either the electrical burner test for flexible and thin materials (NF P 92-503), or the radiation test (epiradiator cabinet) for rigid or flexible and thick materials (NF P 92-501). In principle, cotton wool inflammation at the dripping test leads to M4 classification. If the cotton wool is not inflamed at the dripping test, the classification obtained at the main test is maintained or the material is downgraded according to whether there was some uninflamed or inflamed dripping during this same main test.
In case of holing without inflammation or with short time inflammation at the main test, this outline is also applied to the complementary flame persistency test (NF P 92-504) when there was again some uninflamed or inflamed dripping during this complementary test.