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This standard cylindrical style addition funnel has a standard taper top outer joint and standard taper lower inner joint which are both the same size. This item features a pressure-equalizing arm and a PTFE stopcock. 14/20 and 19/22 sizes are supplied with one CG-3000 stopper. See item # CG-1700 for a similar funnel but with a glass stopcock.
Sizes 250 mL and less have 2 mm stopcocks, 500 and 1,000 mL sizes have 4 mm stopcocks, and the 2,000 mL version has a 6 mm stopcock. Replacement plugs are item # CG-424.