first4magnets™ - EFH1 Ferrofluid 20ml with 90mm Petri Dish & Pipette - Science & Art

Good product but expensive for what you get

This stuff is great fun. My dad uses it as an illustrator for sermons! Make sure you have the recommended magnets. I don't really know if it has any use beyond amazing friends and relatives or as a quirky light science gift.The seller also responded to an order change too which was wonderful.

Very good present to my older son, we all enjoyed playing with it.

Great educational tool.

Very good product extremely magnetic. very happy.