If you need to dispense liquids accurately we recommend using a peristaltic pump or dosing pump, this pump uses a dc motor, rather than a stepper motor for relatively cheaper price.
Black 12V BPT Tube Liquid Pump
ID:3mm,OD:5mm, 19~100 mL/min
Optional Accessories: Food grade silicone tube, and various fittings for this pump for easy assembly
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