The alcohol Burner bottles can resist temperatures of up to 392 degrees. Bottles are of Light weight and having smooth surface which won't hurt your hands. Alcohol bottle comes with metal cap which is reusable and lightweight, no liquid spill or keep the wick dry to easy fired. Glass alcohol burner can store alcohol, kerosene which are used for Laboratory, Classroom or Home Scientific Equipment which requiring a low heat source. The Alcohol burner is made of high quality lead-free glass material. These are Environmentally friendly, non-toxic, Long durability.