General Category > Yeast and Fermentation

Need advice on stirrer plate

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imperialstout:
Just starting to make yeast starters. Noticed the cell count is much higher if a stir plate is used. Stir plates run from $70 to over $200. What do you use? Want one that runs quietly.

Currently use a 3 L wine jug with a cap drilled and grommeted for an airlock. What would be the benefit of getting a 3 L flask, assuming the stir bar will remain centered in the concave bottom of the wine jug? Any thoughts on what size stir bar to get?

davidgzach:
http://www.stirstarters.com/

Use the stir bar that comes with it.  It works great in my 5L Erlenmeyer.

Dave

hokerer:

--- Quote from: imperialstout on January 20, 2013, 03:41:21 pm ---Currently use a 3 L wine jug with a cap drilled and grommeted for an airlock.

--- End quote ---

You want max growth with a starter which, among other things, means maximum oxygen exchange.  For that reason, it's better not to use an airlock for a starter.  Just cover the top with sanitized aluminum foil.

hopfenundmalz:

--- Quote from: davidgzach on January 20, 2013, 03:48:59 pm ---http://www.stirstarters.com/

Use the stir bar that comes with it.  It works great in my 5L Erlenmeyer.

Dave

--- End quote ---
I have one. Like it. Dan backs up his product.

Mark G:

--- Quote from: hopfenundmalz on January 20, 2013, 04:11:43 pm ---
--- Quote from: davidgzach on January 20, 2013, 03:48:59 pm ---http://www.stirstarters.com/

Use the stir bar that comes with it.  It works great in my 5L Erlenmeyer.

Dave

--- End quote ---
I have one. Like it. Dan backs up his product.

--- End quote ---
Another vote for Stirstarters. I use it with both 2 & 5L Erlenmeyer flasks.

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