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Belgium

The reaction to fire tests classifies the material in 5 categories from A0 to A4 (see table below).
Also note that the test methods used are similar to those used in France. As for Spain, the calculation mode according to the NF P 92-501 test of the M value differs from the French methodology. The test are comparable but results exploitation are quite different. 

Belgium classification 

ClassTest method
AOISO 1182
A1NF P 92-501 / NF P 92-504 
BS 476-7
A2NF P 92-501 / NF P 92-504 
BS 476-7
A3NF P 92-501 / NF P 92-504 
BS 476-7
A4Exceed class A3