How do you control the speed of the pump?

Generally, you don't try to control the speed of the pump, but rather...you control how long it has power. This is generally used as a dosage type pump. In other words, you apply power until it pumps what is needed...then you remove power.

can it be used to pump sulfuric acid?

Yes it can but, and this is a big but, you need to check how resistant to sulfuric acid the tubing material is. If you don't liek what you find, replacing the tubing with a different plastic is possible.

Can this pump be used for potable water? Is it possible to change the tube out for something food grade?

The tube can be changed - that's true for all peristaltic pumps although the difficulty varies - and thus if you use a suitable material use for potable water would be no issue. (Not sure of your application but you should be aware that the flow rate is quite low.)-

Yes, this will run on 9 VDC. I have tested as low as 5 VDC and it works fine as long as there is no significant back pressure on the discharge hose. The pump's flow rate is roughly proportional to the voltage supplied to it, so you can roughly estimate what your flow rate will be as Actual Voltage/12 Volts X rated flow at 12 volts.

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DIY Peristaltic Liquid Pump Dosing Pump for Aquarium Lab Analytical

DIY Peristaltic Liquid Pump Dosing Pump for Aquarium Lab Analytical

Product ID: 127997628

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Details

Brand
INTLLAB
Color
Black
Material
Silicone
Style
Submersible
Product Dimensions
3.94"L x x
Power Source
Corded

⚡Universal AC 100-240V power

💧Precise 5-100 mL/min flowrate

🔧Easy disassembly & maintenance

Description

💡 Pump up your precision with INTLLAB’s powerhouse dosing solution!

COMPACT PORTABLE - Lightweight 6.3 oz design fits perfectly in any workspace or field setup 👜
EFFORTLESS MAINTENANCE - Pump head designed for quick disassembly and hassle-free cleaning 🔧
PRECISION FLOW CONTROL - Adjust flow from 5 to 100 mL/min with LED-indicated speed for exact dosing 💧
BROAD INDUSTRY APPLICATIONS - Trusted across labs, aquariums, biotech, pharmaceuticals, and environmental sectors 🌍
VERSATILE POWER COMPATIBILITY - Works seamlessly on any AC 100-240V outlet worldwide ⚡

The INTLLAB DIY Peristaltic Liquid Pump offers universal voltage compatibility (AC 100-240V), precise flow rates from 5 to 100 mL/min with LED speed indication, and a user-friendly pump head for easy cleaning. Compact and lightweight, it’s engineered for versatile use in laboratories, aquariums, biotech, pharmaceuticals, and environmental applications.

Specifications

Brand	INTLLAB
Color	Black
Material	Silicone
Style	Submersible
Product Dimensions	3.94"L x 2.36"W x 2.17"H
Power Source	Corded Electric
Item Weight	6.35 ounces
Maximum Flow Rate	100 Milliliters Per Minute
Voltage	240 Volts
Manufacturer	INTLLAB
UPC	701705886066
Part Number	DP-385
Item Weight	6.3 ounces
Item model number	DP-385
Size	5~100 mL/min
Batteries Included?	No
Batteries Required?	No

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