Setchkin test

ISO 871 [1IJ details a determination of ignition temperature using a hot-air furnace. This test determines the temperature at which plastics begin to decompose to flammable gaseous products. The original (1968) version of this test has recently been replaced by a version of the Setchkin test described immediately below. 

Small laboratory tests, for example, oxygen index test (OIT) [6], Setchkin test or similar tests under certain circumstances provide a means for production quality control. Their results can only be applied towards the characterisation of fire risk assessment if it can be demonstrated that the test adequately simulates the actual fire situation. 

USA ANSl/ASTM D 1929-77 -ignition properties of plastics. Specified in some US Building Codes. This test is also known as the Setchkin test. A specimen 3 g in weight is assessed to determine the minimum temperature at which the vapour produced wilt ignite when subjected to a heated wire. 

This contains two ignitability tests one uses a glowing wire and one a needle flame. Setchkin ignition apparatus. Measures flash ignition and spontaneous ignition temperatures. Normal sample orientation horizontal. 

Setchkin) of 535 C and UL rating of V-0. Flame spread in the radiant-panel test is low (I, = 2.7) and the LOI is high — 47. NBS smoke-chamber results show a low specific optical density (Ds 4 min = 0.7, Dm = 31, flaming mode), and combustion-product-toxicity studies show results comparable to polystyrene (10). 

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