purchase of coarse sieve shaker , purchase of coarse sieve shaker ( refer tender schedule for detailed specification ) , coarse sieve shaker make: w.s.tyler rx-812 ( or ) equivalent rx-812 coarse sieve shaker 110v / 60hz designed to be used in coarse testing applications, the affordable rx-812 coarse sieve shaker has the unique capability of using both 8 diameter and 12 diameter test sieves, simply by using the quick-change adapters provided. the rx-812 has a quiet operation and utilizes an effective action that gives consistent, accurate results. ? designed for use with 8 and 12 diameter test sieves. ? not recommended for analysis with particles 150 micron ( 100 mesh and finer ) and smaller. specifications oscillations per minute: 280 ( 60hz ) ; 231 ( 50hz ) . 1. can accommodate 6 full height brass frame sieves of 8 or 200 mm dia with stainless steel mesh.