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A carbon tetrachloride fire extinguisher refill manufactured by Western Fire Equipment Company of San Francisco, California. This refill states: “For Pyrene, Fire Gun, Fyr-Fyter, or any other carbon tetrachloride type extinguisher. Superior Liquid contains only the highest grade chemicals and complies with the specifications of the Underwriters Laboratories, Steamboat Inspection Service, and the U.S. Government.”
