stir plate, won't spill fast enought

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bela

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I just bought a Hanna stir plate and a 2000ml flask and a 1'' stir bar.
It spins but really slow. Should I get a 1 1/2 or 2'' stir bar?

thanks
 
doesn't create good vortex, I'm guessing the bar isn't big enough.
the bar is spinning, but vortex is slow.
 
You really don't need a big swirling vortex. In fact, if the vortex gets too deep, it will tend to throw your bar.

So long as it keeps the yeast slurry agitating around decently, you're good.

Can you post a pic or, even better, a video?
 
Ok. I was worried that you watched it with the flask empty and the bar was moving slowly (in which case, a larger bar would not likely help).

If the issue is a small vortex, a larger bar may help.
 
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