UNE 23721:1990 REACTION TO FIRE TEST OF BUILDING MATERIALS. RADIATION TEST USED FOR RIGID MATERIALS, OR FOR MATERIALS ON RIGID SUBSTRATES (FLOORING AN FINISHES) OF ALL THICKNESSES, AND FOR FLEXIBLE MATERIALS THICKER THAN 5 MM.
1990UNE 23721:1990 REACTION TO FIRE TEST OF BUILDING MATERIALS. RADIATION TEST USED FOR RIGID MATERIALS, OR FOR MATERIALS ON RIGID SUBSTRATES (FLOORING AN FINISHES) OF ALL THICKNESSES, AND FOR FLEXIBLE MATERIALS THICKER THAN 5 MM.