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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INTLLAB DIY Peristaltic Liquid Pump Dosing Pump for Aquarium Lab Analytical

INTLLAB DIY Peristaltic Liquid Pump Dosing Pump for Aquarium Lab Analytical

Product ID: 784661888

Details

Brand
INTLLAB
Colour
Black
Item weight
180 g
Material
Silicone
Maximum flow rate
100 Per Minute
Number of Packs
1

⚡12V DC power for consistent performance

💧Flowrate up to 100 mL/min for precise dosing

🔄Reversible flow direction for ultimate control

Description

💡 Pump up your precision—DIY dosing made sleek and smart!

COMPACT PORTABLE - Lightweight 95g design fits seamlessly into any workspace, empowering your DIY projects and professional workflows.
VERSATILE APPLICATION - Engineered for everything from aquariums to biotech labs—adaptable to viscous and non-viscous liquids alike.
PRECISION FLOW CONTROL - Choose from 3 silicone tube sizes delivering 2-100 mL/min to match your exact dosing needs.
REVERSIBLE FLOW DIRECTION - Switch flow direction instantly with simple polarity changes—perfect for dynamic experimental setups.
USER FRIENDLY MAINTENANCE - Quick-disassembly pump head design makes cleaning and upkeep effortless, saving you valuable time.

The INTLLAB 12V DC Peristaltic Liquid Pump offers precise, adjustable flow rates from 2 to 100 mL/min via three silicone tube sizes. Its reversible flow direction and easy-to-clean pump head make it ideal for diverse professional uses including aquariums, biochemical labs, and environmental applications. Lightweight and portable, this pump combines durable housing with versatile functionality to elevate your dosing and liquid transfer tasks.

Specifications

ASIN	B07PWY4SM6
Brand	INTLLAB
Colour	Black
Customer Reviews	3.8 3.8 out of 5 stars (92)
Flow Rate	100 Millilitres Per Minute
Item Dimensions L x W x H	10L x 6W x 5.5H centimetres
Item Weight	180 g
Manufacturer	INTLLAB
Material	Silicone
Model Number	DP-385
Number of Items	3
Number of Packs	1
Part Number	DP-385
Power source	Corded Electric
Product Style	Submersible
UPC	701705886066
Usage	Laboratory settings, Scientific research, Water treatment facilities
Voltage	240 Volts

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