The title says 120cc but the description says 30cc which is it???

it is 4oz. So the bottle it comes in is about 3 inches tall and approximately 1-3/4 inches in diameter. hope that helps.

Can I used it in a magnetic vacuum seal?

The EFH-1 type listed here is not recommended for use in speakers and I would guess that EFH 1 would not have the correct viscosity for use in seals.

What is the size of the nanoparticles in nm? Can you wash off the oil and resuspend in water?

i don't remember what the size was, although 4 nano meters comes to mind. If you removed the oil and tried to suspend them in water, the particles would oxidize(being exposed to oxygen) and would gather together into redish clumps. All the smooth fluidity would be no more.

Is this an authentic ferrotec fluid? what is the model number for it? amgxxx emgxxx etc etc etc

Yes, .. this efh1... part number is 92u40000000 / lot number v121021a.. this educational FF.. not for speakers etc

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4 oz (120 ml) Magnetic Ferrofluid Science Bottle – Interactive Liquid Magnet Display for Experiments, Demonstrations & STEM Projects

Product ID: 10379316

🔬Visualizes magnetic fields live

🧲120 mL ferrofluid volume

♻️Reusable & long-lasting formula

$U4045

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Description

🧲 Unlock the invisible forces shaping your world—one mesmerizing swirl at a time!

STEM POWERHOUSE - Perfect for hands-on physics and materials science learning.
DURABLE REUSABLE - Engineered to maintain performance across countless demos.
PLUG PLAY SCIENCE - Pre-filled, sealed bottle ready for immediate experiments.
MAGNETIC FIELD MAGIC - Watch magnetic forces sculpt liquid art in real time.
UNIVERSAL MAGNET COMPATIBILITY - Works seamlessly with common neodymium and ceramic magnets.

This 4 oz (120 mL) Magnetic Ferrofluid Science Bottle offers a captivating, hands-on way to visualize magnetic fields and explore magnetism principles. Designed for STEM education and demonstrations, it features a durable, pre-prepared ferrofluid that reacts dynamically to standard magnets, making complex magnetic phenomena accessible and engaging for professionals and educators alike.

Specifications

ASIN	B00126LYAG
Age Range Description	Adult
Best Sellers Rank	#237,437 in Toys & Games ( See Top 100 in Toys & Games ) #2,161 in Educational Science Kits
Brand Name	Applied Magnets
Color	Black
Customer Reviews	4.3 4.3 out of 5 stars (91)
Educational Objective	Science
Included Components	Ferrofluid
Item Type Name	Ferrofluid
Item Weight	0.22 kg
Manufacturer	Applied Magnets
Manufacturer Minimum Age (MONTHS)	144
Manufacturer Part Number	F-4oz
Material Type	Synthetic,Magnetic
Model Number	F-4oz
Number of Packs	1
Operation Mode	Manual
Size	Large
Subject Character	Ferrofluid
Supported Battery Types	No batteries required
Theme	Science
UPC	816799012953

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TrustScore 4.5 | 7,300+ reviews

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$U4045

Duties & taxes included

In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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