Stir bar removal tool magnetizing a stir bar out of an erlenmeyer flask

Maelstrom® Stir Plate

$174.99

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Product details

The first industrial-grade programmable magnetic stir plate designed specifically for yeast starters. Now includes a Stir Bar Removal Tool!

Breed a Herculean army of yeast for brewing bigger beers than ever before. Powerful rare earth magnets churn through any size starter and never throw a stir bar. Five-speed control adapts to sizes from minute to mammoth, for yeast starters in a 1000ml Erlenmeyer flask, all the way up to a 5-gallon carboy.

Command a massive yeast starter while you're at work or over the weekend. Let it run indefinitely, or program up to 48 hours of stir time. Schedule it to settle out yeast just in time to come home and brew.

Watch Maelstrom® surge through starter wort creating a vortex like no other. The transparent body shows the magnets whipping through rotation. Plus, the seamless surface makes for easy cleaning.

Easy to use with an intuitive interface, the Maelstrom® sets the new standard as the most powerful and versatile homebrewing stir plate ever created for the home brewer.

Be sure to check out our Fast Pitch® Yeast Starter Kits in 1000 ml and 2000 ml sizes.

Additional information

Support Documents - Instructions	Click here for instructions
SKU	40332

Features:

Now includes a Stir Bar Removal Tool!
Includes a 50mm stir bar
Five distinct speeds, from 480-1440 RPM, to accommodate yeast starters up to 5 gallons
Scheduling function for up to 48 hours
Seamless surface for easy cleaning & maintenance
Powerful magnets will never throw a stir bar
Translucent body lets you watch the magnets in rotation
Standard 12V Power Adapter
Large 8" W & x 8 ½" L stirring platform

(*Erlenmeyer Flask not included)

California Proposition 65

⚠ Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.

Not functioning as I had hoped and not quite 5 L. From Northern: That bar in your picture looks to be roughly 3 inches long and straight-cylindrical. A Maelstrom-type stir plate usually tops out around 2L of low-viscosity wort with a bar that size. Once you go to thicker starters or a 5L flask, the magnetic coupling slips: the bar decouples, skates, or ejects. A few quick fixes:
Down-size the bar and ramp speed slowly. Try a 1½- to 2-inch oval bar with a pivot ring; its lower mass and centered ring help it stay locked while still giving good circulation. Start at the lowest RPM, let the vortex form, then inch the speed up.
Use two smaller bars instead of one large one. Drop them in one at a time — they’ll align end-to-end and put less strain on the drive magnet.
Raise the flask ½–1 inch. A plastic coaster or lid under the flask shortens the air gap so the magnets couple more strongly.
If the starter is very thick, switch to an overhead mechanical stirrer or a more powerful lab stir plate (≥50 kg-cm torque). Magnetic stirrers have their limits once you get beyond ~3 L of dense media.
These tweaks usually keep a 5 L starter spinning steadily without bar throw-outs.

It%20just%20works

Works well as advertised.

Very reliable

Quality Product

This stir plate is high quality and easy to use, not to mention, it looks nice! I also like that it is large enough to accommodate big yeast starters for high gravity beers. I first used it for the all grain Scottish Wee Heavy kit and will be brewing a Belgian Quad in the next week or so. I also recommend the stir bar, stir bar removal tool and the foam stopper that come as add-ons. They are cheap and worked very well!

It worked well. I’m not sutr about fast pitch wort and liquid yeast.
Think I will stay with dry.

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