Editor information：I was a Phd student two years ago and My major is materials science and engineer. We did a lot of experiments in our lab. And this product was tested in our lab. And they are working great. Trust me. It's a good choice. Even the price is good when you compare to other website, like VWR something. Product Information: High Quality magnetic stir bar. Length Quality 5 mm 2 10 mm 2 20 mm 2 25 mm 2 30 mm 2Total is 12 magnetic stir bars in one package.
S**K
Great for the money
This set includes a wide range of sizes, from tiny to quite large. As an experiment, I used the smallest one in a test tube and was able to generate a whirlpool. The strongest solvent I am using right now is pure laboratory grade ethanol so I can't comment on it's resistance to stronger chemicals, but so far the bars have suffered no noticeable effects from this level of solvents.
B**B
Great value!
I helped my friend order these. She is very happy with them. They are very clean and well constructed. They were only one dollar each. Great buying experience.
P**.
Not all bars are created equal
Bringing a solution up to temperature on a hotplate in a beaker, one of the two larger bars will start to tumble instead of spin as the RPM rises.I will take that stir bar out and replace it with the other one of the exact same size from this set and immediately bring it back up to the same RPM and it will spin correctly and I can continue to raise the RPM as the solution gets hotter.If I try leaving the other bar in it will keep tumbling instead of spinning at a certain RPM no matter how much hotter (more viscus) the solution gets.This is acceptable as I am rarely mixing more than one solution at a time, even though I have to hot plate/stirrers, but the quality control wasn't the greatest on the two large bars.
B**R
Not bad
Work good for cheaper ones. Id buy again
A**R
Definitely a must to warm up solids for blending
Making perfume has gotten a lot more stream lined. No more running from microwave to table and back again for heated water
S**N
Still a bit too small
I really need over an inch long for a good stir
S**N
Good quality and price.
This item work perfectly in our lab. The price is fairly good comparing to other stores. Fast shipping, good purchasing experience.
C**A
great
great
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