... rotary evaporators. Standard ModelR502DR503DParameters1Evaporating Flask (L)5L / F505L / F502Receiving Flask (L)3L/40, Bottom Discharge3L/S35, Bottom Discharge3Condensing Surface (m2)Vertical ... Lift- Y -- Y -22Reflux/- Y -23Thermometer Neck for Vapor/- Y -24Cold Trap- O -- O ... different experience-- Simple & RelexedSENCO, China made, Rotary Evaporator, Experiemental, Lab scale, Pilot Production, Water ...