Agitador Burrell Model 75

Burrell Scientific Model 75 Wrist-Action Shaker, a benchtop laboratory shaker that reproduces the snap-wrist swirling motion of hand mixing for dissolving, extracting and blending samples in flasks, bottles, funnels and specimen jars. The unit has a painted steel blue and white housing with a sloped front control panel carrying a rotary timer graduated 0 to 60 minutes with a continuous (infinity) position and an illuminated-style rocker on/off switch, plus a side adjustment knob that sets the shaking arc. Published data for the Model 75 gives an oscillation rate of approximately 385 oscillations per minute with the degree of agitation adjustable from a gentle swirl to vigorous shaking by increasing the arc of movement. The data plate on the rear of the cabinet reads Burrell Scientific, Pittsburgh, PA, single phase, with serial number 183068017; a CE mark is applied next to the plate. The shaker is fitted with a horizontal shaft-mounted clamp assembly holding multiple red-handled extension/utility clamps for securing vessels, as seen in the photos. A detachable line cord with a standard North American plug is included. The machine was photographed in place on a laboratory bench at an R&D facility and shows normal cosmetic wear; a facility property tag is affixed to the front panel. No operational testing information was provided with this listing, so function has not been verified.