Abstract: The WSL Gas Igniter is, in essence, a small, reuasable gas bomb intended to be used in the testing of fire suppression systems. The device has two main parts. The main parts are the control box and the igniter head. The control box controls all aspects of operation. It controls the flow of all gases, as well as, the electrically powered ignition system. The igniter head contains an accumulation/combustion chamber in which a combustible mixture of gases is introduced. Also, the combustion chamber contains a small spark generating means. A control signal initiates a spark system and the flow of gases into the combustion chamber simultaneously. At the desired moment of ignition, the control signal is removed, which ceases the gas flow and ignites the combustible mixture of gases in the combustion chamber. The explosion produced by the invention is intended to ignite a test subject for the purpose of testing fire suppression capability.