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Informations content

what is German DIN 4102 (B1)?

Principle:	A material is classified as B1 if it fulfils the requirements of a B2-test and the ‘fire shaft’ test.
Test Method:	B2 test The test specimen is put on a specimen holder that is hung in a test cabinet. A burner flame is applied to it for 15s. The time to reach a marked point is measured. Also the burning droplets are observed by means of a paper placed under the specimen. ‘Fire shaft’ test A test specimen is hung vertically in a test cabinet with a burner in it. It is subjected simultaneously to a flame for 10min and a constant flow of air from below. The temperature of the smoke and the undamaged length of the specimen are measured.
Result:	The fabric is classified B2 if after the B2 test: - The time to reach the marked point is minimum 20s. - The paper doesn’t ignite. - The droplets are burning for maximum 2s. A fabric is classified B1 if after the fire shaft test: - The residual length is minimum 150mm. - The temperature of the smoke is maximum 200°C.

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