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Old 06-08-2009, 09:18 PM   #1
Scut_Monkey's Avatar
Jan 2009
Pittsburgh, Pennsylvania
Posts: 2,656
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Lately I have been accruing equipment for yeast starters (ie stir plate, flasks, etc.). My question is for a 1000ml flask what stir bar would you use. I realize a 1 incher should due but do most people prefer the type with the pivot ring in the middle or without the pivot ring. Just wondering which type is most stable, quiet and provides the best areation. Also, has anyone found a cheap source for stir bars.... they can be rather pricey for how simple a product they are. Thanks!

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Old 06-09-2009, 01:43 AM   #2
PintOfBitter's Avatar
Feb 2007
Posts: 1,154
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got mine from cynmar.com - great site for cheap lab stuff. mine has no ring, and is stable. it's a tad over 1".

Maybe you can use these Grain, Hops, Yeast Reference Charts

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Old 06-09-2009, 04:16 AM   #3
Mar 2009
Eau Claire WI
Posts: 73

I would recommend stir bar with "O ring" (Pivot Ring). 1" for 1000 ml should be fine. I find that Stir Bar with O Ring is more stable and also quieter. (Less friction). As far as of liquid movement (ring or not ring) they do the same job equally well.

You can find them at Northern Brewer Or Mc Master at McMaster-Carr
Na Zdravie

On Tap:
Bohemian Dark Beer

Bohemian Pilsner

In Fermenter:
Bohemian Pilsner

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Old 06-10-2009, 03:58 PM   #4
May 2008
Dallas, TX
Posts: 214

Good tip on the McMaster source, Thirsty Monk. I would have never thought they would have stir bars.

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Old 06-10-2009, 04:32 PM   #5
Aug 2008
Posts: 965
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They also make a "football" shaped one. I don't have one, but think that it might get quieter.

The first time I made a starter (1L ) the noise was bad. When I stepped up to a bigger flask & stir bar, it was much better. Both of my stir bars have the center ring.
Orange Cascade Pale Ale -


BeeCave Haus Ale - 6%
Bells Two Hearted, round 2- 6.1%
SNPA Clone (Chilled )
Hard Lemonade

Shiraz - 6 gal

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Old 06-10-2009, 06:34 PM   #6
TommyBoy's Avatar
Jul 2008
Greenville, South Carolina
Posts: 524
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Get the one with a pivot ring. The McMaster ones have rings that can be removed if you like.
Heros are made 10 gallons at a time.

Kegged/On Tap - Double IPA
Conditioning - Orange Ale

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