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Stir Bar Features
- Made with PTFE material
- Hydrophobic, high corrosion resistance, and very non reactive
- Easy to clean
- Octagon shaped with pivot ring or smooth with single ridge
- Works with most magnetic stir plates
Ksmart
Reviewed in the United States on February 10, 2025
First test - anything above 25% speed and they fly off. You have to approach the speed very slowly. Over night - it still flies off. Reduced to 20 then 15% .. and at 15% power it is stable - but cant mix the fluid.
Underwater Surfer
Reviewed in the United States on February 14, 2023
These are well made and larger than I imagined, even knowing the dimensions! I purchased the INTLLAB magnetic stirrer, which works very well, and also purchased these bars. I didn't understand at the time that the length needs to be close to the length between the centers of the magnets in the stirrer, but that information isn't provided by the seller. These work a little bit, but only at a very specific slow speed. When the speed was increased, they broke the magnetic bond and rattled around. INTLLAB included a 25mm x 7mm bar that works great up to full speed! It was my fault for not understanding.
UFSlacker
Reviewed in the United States on January 3, 2021
Used for 4 liter yeast starters. This is really nice. Whirlpool down 4-5 inches and allows me to run full power. One seems to be a little off balance but usable. The other 2 are perfect.
RanchCowsAndTractors
Reviewed in the United States on September 17, 2020
The ridge in the center makes these rattle against the container, they also are very inconsistent and lose their magnetic field constantly.And the seller includes some weird packaging with them, some creepy business card talking about Unobtanium. I cringed and wanted to send them back when I saw that.
Gralfus
Reviewed in the United States on March 17, 2020
These mix the liquid faster and with less noise than the shorter bars I've used. Not unbalanced as one reviewer said, it often depends on how centered the bars are on the magnetic stirring plate (particularly home-made plates).
Brewbuzzard
Reviewed in the United States on January 16, 2020
Far less friction than other stir bars. Easier on the stir plate motor and less heat build up too. I make a lot of yeast starters and these are my choice.
Eric Shira
Reviewed in the United States on December 5, 2019
They do the job pretty well.
Customer
Reviewed in the United States on November 10, 2019
These work great. I use them in a 5L erlenmeyer flask for making yeast starters (homebrewing).
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