The Single Burning Item (SBI) is a test method for determining the reaction to fire behavior of building products (excluding floorings) when exposed to thermal attack by a single burning item (a sand-box burner supplied with propane)試料は排気装置の下の枠に配置された車に乗せられ,試料の燃焼器への反応は,道具と視覚的に監視されます.熱と煙の放出率を計測し,物理特性を観測によって評価する.