Consistent, repeatable agitation for Asphalt Rice Test and other specific gravity determinations. Variable vibration control allows for setting optimum agitation. Automatic operation minimizes operator error and frees technician from hand agitation. This full-feature Vibro-Deairator is designed for consistent shaking of Asphalt Rice Test vacuum pycnometers while freeing the lab technician. It is a useful deaeration device for specific gravity tests of fine aggregates (ASTM C 128) and soils (ASTM D 854), for sample preconditioning per ASTM D 4867 and AASHTO T 283. Built-in 099 min., 59 sec. digital timer has 0.25 second accuracy, vibration speed control, and a three position switch for manual or timed operationall front panel mounted for easy use. Speed control allows setting of agitation to avoid stripping of asphalt. The SGA-5R comes with fitted top and bottom plates. GW-76 Filter Flasks Sold Separately SGA-8 Vibro-Deairator Adapter Set Sold Separately Special “speed knobs” quickly secure the pycnometer. After a few loosening turns, they tilt and slide for fast removal. The steel case has rubber feet; no mounting is required. Overall Dimensions: 13x14x19in (330x356x483mm), WxDxH. Estimated Ship Weight.: 20lb (9kg).