Magnetic Stirrer Question

[Muttling]

I apologize to Randy for going slightly off forum topic, but I know there are several folks here with professional laboratory experience and I was wanting to get their input.

How strong are the laboratory grade magnetic mixers and could would they be adequate for use in the bottom of a Kalk reactor. My concern is that the stir bar might get gummed up in the kalk and not spin when the stir unit was engaged.

[Randy Holmes-Farley]

Muttlng:

The stirring strength depends on how good the magnets are in the stirrer and the particular stirring bar used.

If you had a lot of excees lime, and the bar stopped and the lime all settled, that could cause it to freeze up. I've had solid/liquid mixtures in the lab freeze up like this.

Still, I have it in the back of my mind that people have successfully used such stirrers in limewater reactors.

Anyone?

[Gamera]

I've never had any of my stir bars freeze up, ragardless of what's in the mix.

However, I tend to use the larger, football-shaped bars for stirring and I usually crank the stirring torque up.