... when used.Three work model: Rate setting model, Time and volume setting model, and weight setting model.Alarm fuctions: Occlusion, syringe empty ... design of the LCD.Specifications:*Adapted syringe: 10ml, 20ml, 30ml and 50ml*Flow range: 50ml: 0.1-1800ml/h 20ml: 0 ... , aspirators, Ultraousnd scanners, ECG etc. All are of good quality and reasonable prices. Pls send your enquiries to us if you ...