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

Product ID: 78346192

Details

Brand
K KAMOER
Color
Blue
Manufacturer
Kamoer Fluid
Material
Plastic
Maximum Flow Rate
70 Milliliters
Maximum Lifting Height
500 Meters

⚡12V DC power for efficient operation

💧≥70ml/min precise low flow rate

🔄Reversible flow direction for versatile use

₨336

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Description

💧 Precision dosing meets sleek design — never miss a drop!

ENERGY SMART - Low power consumption with reliable 12V DC operation keeps your projects running longer.
LAB GRADE PRECISION - Consistent ≥70ml/min flow rate ensures accurate liquid handling for aquarium, lab, and DIY applications.
COMPACT LIGHTWEIGHT - Small footprint (2.63 x 2.16 x 1.61 in) and just 3.52 oz—perfect for tight spaces and mobile setups.
EFFORTLESS MAINTENANCE - Snap-in pump head design makes tube replacement and cleaning a breeze.
VERSATILE FLOW CONTROL - Supports reversible liquid flow, ideal for dosing, sampling, and irrigation tasks.

The Kamoer NKP Low Flow Peristaltic Pump is a compact, lightweight 12V DC dosing pump designed for precise liquid handling with a flow rate of ≥70ml/min. Featuring a snap-in pump head for easy tube replacement and cleaning, reversible flow direction, and low power consumption, it’s ideal for aquarium maintenance, lab analysis, and DIY liquid transfer tasks.

Specifications

ASIN	B07GWJ78FN
Best Sellers Rank	#33,797 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Peristaltic Metering Pumps
Date First Available	August 28, 2018
Item Weight	3.52 ounces
Item model number	NKP-DC-S10B
Manufacturer	Kamoer Fluid Tech (Shanghai) Co., Ltd
Product Dimensions	2.63 x 2.16 x 1.61 inches

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