The Bunsen Burner is a nickel-plated brass tube 15 mm in diameter with an adjustable non-removable screw type air regulator and riffled gas inlet nickel-plated brass tube 11 mm outer diameter, on a heavy stable metal base synthetic stove enameled finish for LPG. This is an Indian-made product. This product is especially used in research labs, and physics and chemistry laboratories in Bangladesh. Labtex Bangladesh is a supplier and wholesaler of Bunsen Burner.