WATER SAMPLER The compact Alexis peristaltic pump can either run on its self-contained internal 17 amp AGM battery or 110 volt electric socket. And at only 21 pounds, this pump is light weight and extremely durable. The rugged Pelican 1430 case enclosure is made of impact and corrosion resistant ABS plastic to withstand demanding work conditions. Incorporating the most accurate and precise variable speed controller for consistent flow rates will ensure the technician reliable sample integrity. The system features a built-in digital display, and sealed push buttons are used to control the pump. The pump also includes a master power switch and buzzer to indicate low battery. Features : Pumps up to 2.5 liters per minute and as low as 40 mL per minute Constant Voltage Boosting Technology boosts battery voltage for longer run times and steady flow rates LCD display provides real-time flow rates, allowing the user to quickly make changes as needed. Includes : Alexis peristaltic pump with internal battery, mounted in Pelican 1430 case AC charger Power inverter Quick disconnect plug with battery clips. Specifications : Length: 16.93″ Width: 9.61″ Depth: 13.42″ Weight: 21 lbs Warranty: 6 months parts and labor (does not include battery).