A Simple Method To Determine the Speed of a Rotary Shaker Rotary shakers are ind~spensabletools during the culturing of microorganisms in liquid media'. The shaker keeps the culture medium in a uniform swirling motion over long periods. Thus, i t helps to increase the dissolved oxygen content of the medium. imoroves the contact of the mierobialeell with medium. and nreventscell clumnine. Theseare critical factors for microbial erbwth and are directlv, denendent on the soeed of the'shakkr measured in t e r k i f number of rotations ner " minute rrpm~."l'herriore, it is necessary to know and fix the speed
