Inefficiencies when performing this technique at large scales can be measured via density profiles created from a moving gamma-ray source. A “bow wave” forms in a very fast form of this technique that uses a wiper to distribute samples into a thin film. (-5[1])“Stripper” and “rectifier” setups for a form of this technique are distinguished by the location of the charge pot. Analyzing this technique’s results requires determining the slope of the (*) q-line as it intersects feed composition using the McCabe-Thiele (“TEE-lee”) method. (10[1])Finger-like indents are found on a device for this technique named for Vigreux (“vig-ROO”), which may use packed beads to increase surface area. The “simple” form of this technique cannot process mixtures called azeotropes. For 10 points, name this technique that separates liquids by boiling point. ■END■ (10[1])