Author Topic: Yeast count  (Read 352 times)

Offline jc24

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Yeast count
« on: December 27, 2017, 01:40:08 PM »
Has anyone with the necessary equipment done a yeast count on starters prepared to both Beersmith's and Mr. Malty's specs? There's a big discrepancy between the two, and I'd been keen to hear if anyone has actually measured the resulting yeast count for the specified starter volumes...

Offline dmtaylor

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Re: Yeast count
« Reply #1 on: December 27, 2017, 01:42:02 PM »
I have two microscopes.  However I have not used them to count yeasts.  How much pitch rate really matters is a matter I am still testing but more recently becoming more skeptical of.
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Offline denny

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Re: Yeast count
« Reply #2 on: December 27, 2017, 05:46:21 PM »
I have two microscopes.  However I have not used them to count yeasts.  How much pitch rate really matters is a matter I am still testing but more recently becoming more skeptical of.

I've totally gone to vitality starters, which means I don't care too much about cell count.  I'm getting results at least as good as when I used yeast calculators and stir plates.
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Offline Robert

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Re: Yeast count
« Reply #3 on: December 27, 2017, 07:15:13 PM »
I go by volume of slurry, at a consistent density, pitched.  I don't know actual cell counts, but I know what works from experience, and am able to get consistent and repeatable results.  With no more expensive equipment than mason jars and a measuring cup!
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Offline majorvices

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Re: Yeast count
« Reply #4 on: December 28, 2017, 01:04:29 AM »
I do cell counts regularly in a commercial setting. I have found MrMalty.com to be pretty accurate if your yeast is healthy and viability is high.

Offline majorvices

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Re: Yeast count
« Reply #5 on: December 28, 2017, 01:26:21 AM »
I go by volume of slurry, at a consistent density, pitched.  I don't know actual cell counts, but I know what works from experience, and am able to get consistent and repeatable results.  With no more expensive equipment than mason jars and a measuring cup!

And that is actually the most important part. Getting the consistent results you want.

Online klickitat jim

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Re: Yeast count
« Reply #6 on: December 28, 2017, 05:44:47 AM »
I have two microscopes.  However I have not used them to count yeasts.  How much pitch rate really matters is a matter I am still testing but more recently becoming more skeptical of.

I've totally gone to vitality starters, which means I don't care too much about cell count.  I'm getting results at least as good as when I used yeast calculators and stir plates.
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Offline hopfenundmalz

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Re: Yeast count
« Reply #7 on: December 28, 2017, 01:56:14 PM »
Do a web search on “shaken, not stirred” starters, which are pitched at high Krausen.
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