Nalgene DS4101 Polypropylene Vacuum Filtering Flasks are molded in one piece to withstand full vacuum to 30" Hg. Tubulation at 45° angle prevents tipping. Barbed adapter accepts 1/4" to 3/8" I.D. tubing. Cat. No. DS4101-2000 is graduated. Oval marking area. Neck sized to fit standard stopper sizes.
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