Low Temperature Cooling Circulator Pump Working Temp. :(optional) -120~Room temp. Tank capacity ( ... 8,16,20,30,50,80 20L Low temperature Cooling Circulator PumpFeatures:•Side in the wind side exhaust, corner round turn ... : molecular pump rotation evaporation meter, distillation, fermentation device, laser, metal 5.rapid prototyping device, vacuum coating machines Specification: ModelTemp. range ...