It's fun to see the multiple peaks that change in number with the strength of the magnetic field! Nicely made and instructive. Looks even better when the blue fluid is illuminated by a strong LED light.
I had a great experience ordering and receiving my ferrofluid. My husband is a chemistry teacher and this will be an anniversary gift for him to have in his classroom. I made an error when ordering and got help almost immediately. The product arrived within a couple of days and I’ve been having so much fun “testing it out” before I give it to my husband. Highly recommend MTR Designs!
SPIKE ferrofluid display (Blue ferrofluid)
I wrote my review on the red one already. But again lots of fun, fast shipping