Supports the following standards: ASTM C186, ASTM D3282, ASTM D422, ASTM D7928, AASHTO T88 Modified mixer to meet specifications is used for dispersing soil suspensions used in hydrometer method of testing sub-grade 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 6.5" x 7" (508 x 165 x 178mm).