Ace Glass 7200-04 Tube with 25 mm Disc, B (70-100 Micron), 32 mm

Fritted disc is angled approximately 15° from stem, permitting the small gas bubbles to rise from the disc surface without excessive formation of large bubbles. Tubes perform comparably to a horizontal disc, but construction allows their use in test tubes or flasks where a large opening is not available.Tubes are manufactured from Borosilicate glass.