Stonylab Filtering Flask With 24/40 Standard Taper Outer Joint, Heavy, 50 Ml Description StonyLab filtering flask is widely used for vacuum filtration in laboratories; particularly useful when filtering slow-moving or challenging-to-filter concentrated solutions under normal pressure With 24/40 standard taper outer joint and 9 mm hose interface 1 pack; available capacity in 50 ml, 100 ml, 250 ml, 500 ml, 1 L (1000 ml) Made of Borosilicate glass; reusable, high quality material and perfect handcraft StonyLab ensures high quality products and premium customer service; if received damaged, please contact us immediately; we will solve it until satisfied