Fire Syringe Here's an explosive demonstration of Boyle's Law. As air compresses, temperature increases, and paper bursts into flame. Create a tiny fire in the tube bottom, by inserting a small piece of tissue and pushing the plunger into the tube. As the air compresses inside, you'll see a quick burst of flame. Includes: aluminum piston, plastic piston chamber, and 2 custom O-rings. Qty :