Kimble and Kontes have upgraded all of their filter flasks, which now feature a heavier, more uniform bead for less chipping and maximum durability. Heavier walls mean less chance of breakage during vacuum filtration. Beaded bottoms increase scratch resistance. Several styles are available with both standard and detachable hose connections. Flask shown has removable hose connection. Unit capacities range from 25 to 4000 ml.