INTLLAB7pcs/Pack Mixed Size PTFE Magnetic Stirrer Mixer Stir Bars Type-B Set

The 35mm, the two 30mm, and the 15mm worked great! The 25mm, the 20mm, and the 10mm didn't work well, as they seemed unbalanced, so they were noisy and it was very hard to get them to work. I am using these with the INTLLAB Magnetic Stirrer.

Thanks

Got the set of stir bars to replace one that i lost that came with my stir plate. The stir bars seem to work fine testing them with a 2L Erlenmeyer flask. No issues, would recommend to others looking for cheap, functional stir bar set. Using them for yeast starters, so nothing complicated. Good deal!

These are PTFE coated magnetic stir bars. They do the job quite well. I'd highly recommend them if you're doing anything where you need these. Decent price, and definitely good quality. Mine had a NICE thick coating, such that one of them fell in the garbage disposal, and made a terrible noise when I turned the thing on. After extraction, I saw a pretty heavy cut in the coating, but it wasn't cut all the way through. I use mine for food, so that one's in the trash (better safe than sorry) but if you're doing something else, this would probably have still worked fine after being in the garbage disposal (that noisy thing in your sink that beats up food and allows it to go down the drain, if you're reading this from some location where you don't use that same term.).Would buy again.

The media could not be loaded. Nice selection of sizes spill well on the plate with thick oil

I bought these to replace my LOST set... And the LOST ones turned up right AFTER two uses of the new ones. These work very well for me and have a nice little case. SO... I hope not to lose any of these.

I popped these like aspirin before a flight. I PUNKD TSA HARD. Couldn’t take a joke tho, THEY MADE me15 hours late for my flight

We use these stir bars for our yeast starters. The old stir bars that we had were very loud and obnoxious, but these are silent. I recommend these to anyone who uses a stir plate in their home or office.

No complaints after having these sit in liquid culture for 2 weeks, no signs of rusting. Nice to get different sizes but the little one is REALLY little so make sure you don't lose it.

Good price, good product

You get what you pay for. The PTFE coating is fine, not too thin or anything but the magnets are clearly not the best. I think probably just cobalt magnets when lab grade ones are neodymium/rare earth magnets. I used the large one in an oil bath at 150⁰C and well it isn't very magnetic anymore. The smaller ones couple much stronger to each of my three hot plates (Corning, VWR, Scilogex). If you want to stir room temperature sure but l wouldn't be too aggressive heating these.

A good product for a fair price.

These magnets are smooth compared to the one that came with my machine which has a ridge. I see the median ridge makes a difference when it comes to getting things ti start stirring. These would be improved with ridge around their equator.