How do you control the flow rate?

for me personally I have it set up on a relay and I am using a timer to control my flow rate

What is the volume dispensed per one revolution of the motor?

The motor shaft rolls against the 3 rollers which are rotated much slower. Theoretically the circumference of the motor shaft and the inner diameter of the tubing could be used to calculate the volume (drops) per rotation as the rollers travel 1 motor shaft circumference along the tube per RPM. I'm hoping to find a brushless motor or motor gearbox combo that is about the same RPM. I don't like brushed motors.

Is this rated for continuous duty? Reviews say no?

Not suitable for continuous duty, it is recommended to use it for less than 15 minutes at a time

Which power supply do I buy to power this unit? I know it's 12v duh!

I use it on my boat hooked to the 12v battery system. If I were using it at home, I would use a 110v to 12v "brick" from some old gizmo. I keep all my old chargers and I'll bet I've got 6 12v bricks in my old brick box: just cut off the adapter and wire it to the pump through a switch.

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Kamoer NKP low flow peristaltic pump 12V dc DIY liquid small dosing pump for aquarium lab analytical 3mm ID x 5mm OD

Kamoer NKP low flow peristaltic pump 12V dc DIY liquid small dosing pump for aquarium lab analytical 3mm ID x 5mm OD

Product ID: 78346192

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Details

Brand
K KAMOER
Color
Blue
Material
Plastic
Style
Submersible
Product Dimensions
2.63"L x x
Power Source
Corded

⚡12V DC power for efficient operation

💧≥70ml/min precise low flow rate

🔄Reversible flow direction for versatile use

Description

💧 Precision Flow, Effortless Control — Pump Up Your Productivity!

ULTRA QUIET OPERATION - Runs at a whisper-quiet 40 dB—perfect for labs and offices
ENERGY SMART EFFICIENCY - Consumes only 5 Watts, balancing power and sustainability
SNAP IN DESIGN ZERO HASSLE - Effortless pump head removal for quick tube swaps and cleaning
VERSATILE APPLICATION READY - Ideal for aquarium dosing, lab sampling, bonsai irrigation, and more—be the pro who’s always prepared
COMPACT LIGHTWEIGHT POWERHOUSE - Small footprint (2.63"L x 2.16"W x 1.61"H) and just 0.24 lbs for easy integration anywhere

The Kamoer NKP 12V DC peristaltic pump delivers a reliable low flow rate of ≥70ml/min with a compact, lightweight design. Featuring a snap-in pump head for easy tube replacement and cleaning, reversible flow direction, and ultra-quiet 40 dB operation, it’s engineered for precise liquid dosing in aquariums, labs, and analytical setups. Powered efficiently at just 5 Watts, this pump combines performance with convenience for professional-grade liquid handling.

Specifications

Brand	K KAMOER
Color	Blue
Material	Plastic
Style	Submersible
Product Dimensions	2.63"L x 2.16"W x 1.61"H
Power Source	Corded Electric
Item Weight	0.24 Pounds
Maximum Flow Rate	70 Milliliters Per Minute
Maximum Lifting Height	500 Meters
Voltage	12 Volts (DC)
Manufacturer	Kamoer Fluid Tech (Shanghai) Co., Ltd
Part Number	NKP-12V-S10B
Item Weight	3.88 ounces
Item model number	NKP-DC-S10B
Is Discontinued By Manufacturer	No
Size	Flow:＞80ml/min, Silicon tube: 3.0mm 5.0mm
Maximum Power	5 Watts
Maximum Weight Capacity	3 Kilograms
Sound Level	40 dB
Performance Description	Pollution Free，Low Pulsation
Mounting Type	Embedded
Batteries Included?	No
Batteries Required?	No