Masterflex ls tandem hose pump by cole palmer, model 77495-00, serial # na. Features twin hose pumps from common drive on portable ss base, pumps are tandem 1081 for tube numbers 13. 14, 16, 17, 18 and 25, and tandem 1082 for tube sizes 15, 24 & 35, driven by baldor washdown duty motor, and cole palmer in line 3. 7 to 1 reducer, motor is 90 volt dc and fitted for internal gas flushing for use in harzardous locations, equipped with encoder, maximum motor rpm is 1750, maximum rpm through gear reducer is 472 rpm, pump has casters and cage enclosure. Formerly used in pharmceutical processing.