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This condenser cold finger is for use in refluxing up to 20 mL of solvent in flasks having a capacity of 5 to 50 mL. The top hose connection is the cooling inlet and the middle hose connection is the cooling outlet. A third, lower, hose connection is to allow for the introduction of an inert gas. The hose connections are 10 mm at the largest serration. The cold finger extends either 5 or 13 mm below the 14/20 joint.