Thermo Scientific Nalgene Polypropylene Filter Flasks are molded, one piece flasks can withstand full vacuum to 30" Hg. They accept tubing with 1/4" to 3/8" (6.4 mm to 9.5 mm) inner diameter. Filter Flask EF8848C is graduated.
Tubulation at 45° angle helps prevent tipping
Oval marking area allows convenient identification