The most durable two-stage pump you can buy. This quiet, dependable vacuum pump will produce a high-quality vacuum when performing experiments where a very low pressure is needed—boiling water at room temperature, etc. The rotary sliding vane produces a free air capacity of 85 liters per minute. Other features/specifications include: direct drive, oil trap, pump speed of 3360 rpm, a ½-hp, 110-V, 60-Hz motor, oil capacity of 300 mL, and two intake ports for ¼" or ½" i.d. tubing. Weighs 30 lbs and dimensions are 11" H x 14" L x 5¼" W. Pump oil (1-pint bottle) is included. Contact Flinn for free demonstration instructions and activities!