For dispersing soil suspensions used in hydrometer method of testing subgrade soils, heavy-duty mixer operates at a speed above 10,000 RPM (no load). Includes stirring apparatus with H-4266 stainless steel paddle and H-4265 chrome-plated dispersion cup with 4 sets of permanent interior baffles. Rounded cup bottom prevents soil accumulation. Furnished with 5′ cord and 3-prong plug. Dimensions: 20 x 6-1/2 x 7″ (508 x 165 x 178mm). Complies with ASTM D422; AASHTO T88. Shipping wt. 15 lbs. (6.8kg)