Applied Magnets Magnetic Ferrofluid -2oz- 60ML Bottle, Great for Science Projects

Very cool stuff! Be careful to use gloves and to cover your surface with plastic or lots of paper towels because this stuff is hard to clean up (it is made with nanoparticles). Also pay attention to how close your magnets are to the ferrofluid -- it will go flying through the air to coat whatever magnet gets too close.Fun experiment: I accidentally got this all over one of my more powerful magnets and decided to drop the magnet right into the ferrofluid petri dish. I was amazed how the magnet floated frictionlessly over the fluid.

First of all, this stuff is amazing, and you get plenty of it. Nothing that follows is a complaint, just a few warnings.This stuff is really messy. It's essentially motor oil, so cleaning it off your skin isn't pleasant, but cleaning it off of magnets is even harder.If you have it near magnets, it will find a way to get to them - the fluid will essentially aerosolize and re-form around the matnet, which is really cool to watch and really annoying to clean up.I suggest keeping it in a glass bottle, as small and thin as possible. The stuff will smear across the sides, so if you play with it too much you won't be able to see what's happening, but it's still neat.

I tried finding a carrier for this ferrofluid and have not been successful yet. From left to right I tried olive oil, rubbing alcohol, acetone, and water. The ferrofluid went cloudy in the olive oil and didn't spike at all any more. The rubbing alcohol and acetone might look like good options from the phone because the solution is so clear, but these completely destroyed the ferrofluid so that what you were left with was just magnetic shavings in solution. The water actually worked the best but some of the ferrofluid floated on top of the water and then stuck to the sides of the plastic cup. It also struck to the sides of a glass jar I put it in which is why I wanted to find a good carrier for it. It could be that the carrier should be water but they just didn't clean up the ferrofluid well enough to be good in anything or maybe it needs a mixed solution for a carrier. I gave it four stars because they do give you a lot and it goes a long way, but I couldn't find a carrier for it and the manufacturer hasn't answered that question in the questions section like they should have. They just said it doesn't need a carrier but it really does.

Lots of ferrofluid to play with. I thought this stuff would be a lot different than it is. Its basically motor oil, so if you put it in a glass container (which you absolutely should because if this stuff gets out it will stain any and everything) and it gets on the side it totally blacks out the view until its given time to settle back down. TIP: IF you get this messy stuff on your skin, table, counter, etc then just scrub hard with Dawn soap, its excellent for lifting oils.

This product is not good. I don't know if it have an oil mixed with it or what but it messed up my little thing and now it isn't right.

Liquid does pretty much what its supposed to do, but upon measuring properties for a project, majority was out of the range set by manufacturer including density and viscosity. On the other hand i was nicely surprised by its magnetic propperties including liquids own magnetic field and its magnetic susceptibility.

This is a super fun thing for a kid who’s into science but beware it is a mess 😅 I have a gifted nine-year-old and this was a great Christmas gift for him but holy crap they are not kidding when they say it stains everything. I made him play with this outside in a tote and it’s still looks like a car exploded in front of my house. It’s almost like dirty motor oil that’s magnetic. I’m not saying all of that to try to talk anyone out of getting it because it really is neat stuff I’m just saying be prepared for quite the cleanup.

So much fun! I’ve made a few bottles as gifts and they are always a hit! I used rubbing alcohol to suspend the ferrofluid in and mine works more dramatically with the stronger Neodymium magnets as opposed to refrigerator or ones, guess that makes sense though. Great demonstration in class of magnetic fields.