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 (15[2])for (15[1])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 (10[1])using the (10[1])McCabe-Thiele (10[3]-5[1])(“TEE-lee”) method. (10[6]-5[1])Finger-like (10[2])indents (10[2])are found on a device for this technique named for Vigreux (10[1]-5[1])(“vig-ROO”), which (-5[1])may use packed beads (10[1])to increase surface area. (-5[4])The “simple” (-5[1])form of this technique (-5[1])cannot process (-5[1])mixtures called (10[1]-5[1])azeotropes. (10[7])For 10 points, (10[3]-5[1])name this technique that separates liquids (-5[1])by boiling point. ■END■ (10[15])