Used for methoxy determination as described in U.S. Pharmacopeia, 1995, page 1742. Complete consists of 20 mL boiling flask with 14/20 joint and a capillary side arm, scrubber trap column with 14/20 inner and 35/20 socket, and an absorption tube with 35/20 ball joint and a 2mm bore glass stopcock. Flask and column supplied with hooks for spring connection.