Kamoer KCP-D small adjustable peristaltic pump 24V dc motor 50-100ml/min low flow lab liquid dosing pump with 3 mm ID X 5 mm OD BPT tube

This is a decent little pump. It ticks all the boxes that most cheaper pumps don't. The pump head isn't friction-driven, so it won't slip over time as it gets dirty or the parts deform. The pump head is a solid, rigid plastic, unlike the flexible head found on most cheap pumps. While the pump doesn't have a stepper motor, the knob allows a decent range of adjustment for what I'm guessing is basic PWM control.The only complaint I have is that you have to disassemble the pump to replace the tubing. The head screws into the body and can only be removed from the inside of the pump housing. Not the end of the world, but not the most convenient. Given the price and quality, I'd definitely buy this again if I need another one like it. It just would be nice if the tubing was a little easier to replace.

Perfect for my needs