Laboratory gas burner with double lever, cock, DIN, porpane gas, 1 unit(s)Laboratory gas burner with double lever, cock, DIN, porpane gas, with pilot flame and air regulation Acc. to DIN. Connection for hose with internal 10 mm. Suitable for propane gas or natural gas. With double lever stopcock, pilot flame and air regulation. Note: DIN burners cannot be turned off completely in accordance with standard 30665. Therefore, a small flame continues to burn even when the gas tap or needle valve is closed. For safety reasons,