Inspired Designs Blue Colored Ferrofluid in a Bottle Display - Magnetic Ferrofluid Decorative Magnet - Science Kit - 1 Count - Glass Bottle

It's just so fascinating to look at and play with. It makes a really great desk decoration too

The media could not be loaded. Okay. Here’s some pros and cons.Pro:Fun to play withBeautifulGiftableFast shippingIncludes magnetDidnt come brokenCons:After around a 4 months of using it started to fog up and develop a weird liquid at the top. Very cool otherwise :)

I ordered 10 of these to share with my chemistry club. I wanted to let my students play with ferrofluid without having to deal with the mess. If you just buy ferrofluid by itself, it tends stain everything that it touches. All of the items came in good condition; the vials were intact, and there was no sign of leakage. The ferrofluid was very responsive to included magnet and did not stain the glass. There is a very thin layer of ferrofluid that sits on the very top of the liquid but I suspect that is unavoidable. I should note that the magnet included was not the shiny hematite "stone" show in the product pictures, but rather a black pushpin magnet. The cap under the plastic seal must be made of a ferromagnetic material so you can just store the magnet by sticking it on the cap. The ferrofluid wasn't quite as blue as I had hoped but rather a very dark blue/black. If you have another magnet, you can get the fluid to flow from one magnet to the other and do other "tricks" but this is a small container (roughly 2.75 in x 0.8 in x 0.8 in). Overall, I was pleased with my purchase.

Very durable even when dropped

The clear liquid was was very misty in the package I recieved. But overall great item.

It works and reacts to the magent just like videos seen online. It is a little small maybe only the size of my palm, but lots of fun ti play with i could see it being a choking hazard for very small children but loads of fun for anyone else great buy quick delivery and great present for $20

It was a gift for one of my nieces. She loves it, her younger sisters love it, my dad was amazed by it, and I was reluctant to give it away. Lol!I would definitely be interested in buying a larger amount in a larger bottle I it were offered. I love playing around with magnets.This product is worth the money.

This is SO COOL! I bought it for my boyfriend but i am honestly thinking of keeping it for myself! Works as advertised and comes with a magnet incase you dont have one. The ferrofluid has a nice blue and purple shimmer and always responds to the magnet!