If you've ever spilled a tray of developer on your floor, or wished you had a drain for your temperature-controlled water bath think about getting the Siphon Pump #4045. Simply put the main tube into the liquid you want to drain, point the drain tube to the drain or container, and squeeze the bulb until the liquid starts flowing -- from then on the gravitational siphoning effect will take over until you interrupt it, or the fluid has all been pumped.