The perfect pump for experiments that demand high vacuum, such as boiling water at room temperature. Two-stage direct-drive vacuum pump reduces pressure down to 0.025 mm of mercury with free air displacement of 3.0 cubic ft per minute (85 L per minute). Measures 0 to 30" of mercury. Unit weighs 30 lb and measures 11" H x 14" L x 5-1/4" W. Requires 220-V, 50-Hz power source. Includes 1 qt of vacuum pump oil and instructions.