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

Applied Magnets Ferrotec Ferrofluid 4 Oz 120 Ml Bottle Great

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Description

🧲 Unlock the magnetic magic of nanoscale science—own the liquid metal revolution!

NANO TECH MARVEL - Infused with nanoscale ferromagnetic particles for dynamic magnetic responsiveness.
SLICK SUSPENSION - Particles coated with a special surfactant to prevent clumping and ensure smooth flow.
SCIENCE MEETS ART - Watch magnetic fields sculpt liquid metal-like shapes—perfect for executive desks and STEM projects.
SAFE SMART AND STYLISH - Factory-sealed with clear safety guidelines—ideal for curious professionals and science enthusiasts.
MAGNETIC MASTERY IN A BOTTLE - 120 ml of mesmerizing ferrofluid ready to transform your desk into a science lab.

Applied Magnets Ferrotec Ferrofluid is a 120 ml bottle of high-quality ferrofluid containing nanoscale magnetic particles suspended in synthetic oil. Designed for science projects and executive desk toys, it offers a visually captivating demonstration of magnetic fields in action. Factory-sealed and accompanied by safety data, it’s perfect for professionals and STEM enthusiasts seeking a blend of education and style.

Specifications

ASIN	B00126LYAG
Age Range Description	Kid
Best Sellers Rank	#160,927 in Toys ( See Top 100 in Toys ) #833 in Toy Blasters & Foam Play
Brand Name	Applied Magnets
Color	Multi
Customer Reviews	4.3 4.3 out of 5 stars (84)
Educational Objective	Science
Indoor Outdoor Usage	Indoor
Is Assembly Required	No
Item Weight	0.22 Kilograms
Manufacturer	Applied Magnets
Manufacturer Part Number	F-4oz
Material Type	Synthetic,Magnetic
Model Number	F-4oz
Number of Packs	1
Number of Players	1
Operation Mode	Automatic
Power Source	battery_powered
Size	L
Subject Character	Ferrofluid
Supported Battery Types	Alkaline
Theme	Science
UPC	816799012953
Unit Count	1 Count

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