Source:http://linkedlifedata.com/resource/umls/id/C0183223
UMD: Shakers designed mainly for the agitation of liquids during laboratory procedures. These devices are typically an automated, electrically powered, countertop unit that shakes (usually to-and-fro vibration) liquid containers (e.g., flasks, funnels, test tubes) in several internal or external holders; shakers may include controls for the frequency and/or degree of movement. Laboratory shakers are intended for use in many analytic procedures, including drug analysis, water pollution analysis, and hemolysis. Dedicated tabletop shakers appropriate for operation inside fume hoods, incubators, and/or other laboratory devices are also available.