The maximum rate tested using our store's stepper motor drive board is 0.5mL/minute. The pump tube adopts 2.5mm silicone tube, and the motor is an 8mm two-phase four wire stepper motor with a phase resistance of 22 ohms. The peristaltic pump weighs 5.2 grams. 8mm stepper reduction motor peristaltic pump, all metal micro-type mini peristaltic pump, all metal gear reduction pump head group, peristaltic pump supports changing the direction of water in both directions, copper roller peristaltic pump head, with high requirements for workmanship. The nominal voltage of the motor is 5V and the rated current is 150mA. The stepper motor can achieve high- quantitative output, but specific research is, Weight: 0.01322773572 pounds, Manufacturer: NONDK