NF P 92-505: Dripping test with electrical radiator, used for melting materials.
NF P 92-505: Fire safety - Buildings - Tests on the reaction characteristics of buildings to fire - Tests on hot melt materials : droplet test.
NF P92-505 Combustion Droplet Test - Standard Overview
If droplets appear during the NF P 92-501 and NF P 92-503 tests, regardless of whether there is burning or not, the NF P 92-505 test should be carried out. Comprehensive evaluation of the M- level combustion performance of the material .
NF P 92-505 is used to test whether the burning of building materials produces molten droplets that can ignite lint ( asbestos gaskets ) . If the material does not burn and produces droplets in other fire reaction tests, or the material shrinks rapidly and its flame propagation cannot be measured , a dripping test should be conducted , and the material will be classified into M1~M4 grades based on the results of the dripping test .
NF P92-505 Combustion Droplet Test - Test Requirements
NF P 92-505 test process requirements: Place the sample horizontally on the sample holder, place a horizontal electric radiator with a power of 500W at a vertical distance of 30mm above it , apply a certain amount of thermal radiation intensity to the sample, and apply a certain amount of thermal radiation intensity to the sample. Place a receiving plate at a vertical distance of 300mm , and place cotton wool ( asbestos gasket ) for dripping ignition in the plate , and test for 10 minutes . During the test, observe the flame combustion situation at the same time. If the sample is ignited in the first 5 minutes , the electric radiator should be removed, and the radiation should be continued for the next 5 minutes . Keep records of the combustion conditions, smoke and other associated phenomena of the sample. If the lint ( asbestos gasket ) is ignited, it is judged to be M4 level.
NF P92-505 Combustion Droplet Test - Sample Requirements:
70mm x 70mm x thickness
NF P92-505 Combustion Droplet Test - M Level Related Test Standards
NF P 92-501: Building materials- Reaction to fire tests, radiation test used for rigid material or flexible materials thickness more than 5mm.
NF P 92-501: Fire reaction test of building materials — Thermal radiation test on hard materials of various thicknesses or soft materials with a thickness exceeding 5 mm .
NF P 92-503: Electrical burner test used for flexible materials thickness no more than 5mm
NF P 92-503: Test of fire response characteristics of building materials - Test using electric spray gun on soft materials with thickness less than or equal to 5mm .
NF P 92-504: speed of spread of flame test used for the materials which are not intended to be glued on a rigid substrate.
NF P 92-504: Fire safety — Buildings — Tests on the response of buildings to fire — Fire resistance tests and flame spread rate tests.
NF P 92-505: Dripping test with electrical radiator, used for melting materials.
NF P 92-505: Fire safety — Buildings — Tests on the response of buildings to fire — Tests on hot melt materials : droplet test.
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