Abstract
A simple device, which can be used in place of a syringe pump, has been suggested for high dilution experiments. The flasks containing the solutions to be mixed are equipped with siphons and placed on the top of a styrofoam cylinder, or other floater. The styrofoam cylinder floats in a beaker containing water. A glass rod is threaded through a central hole in the styrofoam cylinder and secured to prevent the apparatus from tilting. Addition of water to the beaker from a dropping funnel causes the cylinder to rise. Both liquids siphon into the reaction flask at an equal rate, which is determined by the rate of addition of water to the beaker.
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