The Burrell Scientific Wrist Action® Shaker has stood the test of time. Since 1940 the Wrist Action® Shaker has defined reliability, versatility, and efficiency of design. Its endurance proves that this product has continuously met the ever changing and growing needs of laboratories worldwide. The Model 75 is the only true Wrist Action® Shaker that duplicates the swirling action of hand mixing. The adjustment arm controls the amplitude and agitation of shaking from 0 to 15 degrees arc. Shaker operates at 385 oscillations per minute (+/- 10%). The Shaker has a built in timer to operate from 1 to 60 minutes or can be set at continuous operation. Today our Shakers are operating in laboratories around the globe supporting research and development for virtually every industry including: environmental and safety, textiles, cosmetics, government and education, food and beverage, chemical, medical, biotech, and pharmaceutical to name a few. Custom clamps and accessories are available supporting a variety of flasks, funnels, bottles, and specimen jars to meet the most demanding laboratory requirements. So if you want a Quality, Built to Last, Never Obsolete, Low Maintenance, Adaptable, Superior Mixing Shaker, we have what you are looking for; The only true Wrist Action® Shaker, by Burrell Scientific. Rugged construction, with timer, rated for continuous use Shaking speed action is variable, simulating a snap-wrist motion for a swirling effect, but the oscillations are constant at 380 to 390 per minute Degree of agitation, gentle to violent, is controlled by an adjustable lever with dial graduated from 1 to 10 Power unit has constant-speed motor and built-in timer, range to 60 minutes in 1-minute intervals All are CSA approved Side sleeves have interchangeable side arm shafts 19 mm diameter and clamps. Erlenmeyer flasks from 125 to 1,000 mL capacity can be shaken at one time without need for balancing. Full torque of the 1/8 HP (93 W) motor is always applied to the oscillating mechanism regardless of speed setting. Side arm shafts take 2-place clamps with slip-on fittings which provide capacity of 4 to 16 flasks, suitable bottles, test tubes, etc., with minimum diameter of 10 mm. Platform for attachment to top takes 6 to 10 Erlenmeyer flasks up to 5,000 mL , also sputum bottles, etc. Platform clamps of rubber slide in parallel grooves. Power unit is enclosed in enameled sheet metal housing on rubber feet; overall dimensions, 343 x 389 x 298 mm high.