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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Yield of first yeast wash ok?
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Old 07-01-2013, 01:38 AM   #1
bennie1986
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So this is one of five jars I harvested from my first yeast wash. Is this a decent yield? I will do a starter with o2 and a stir plate when I use it but I'm wondering if I should use two jars. Also, if I messed up and infected the harvested yeast what can I look for as a sign of an issue.

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Old 07-01-2013, 03:19 PM   #2
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That looks good. As to volume for pitching, it is all dependent on batch size and starting gravity.

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Old 07-01-2013, 03:30 PM   #3
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Quote:
Originally Posted by Ben58
That looks good. As to volume for pitching, it is all dependent on batch size and starting gravity.
Lets say I wanted to do an iipa with a OG of 1.080 and I used a starter with a stir plate, would that be enough? I guess I'm not sure how to calculate pitch rates with a starter.
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Old 07-02-2013, 10:51 AM   #4
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Assuming a 5 gallon batch, and what I see in your photo, a 1.5 liter starter should put you in the ball park.

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Old 07-02-2013, 12:37 PM   #5
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Quote:
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Assuming a 5 gallon batch, and what I see in your photo, a 1.5 liter starter should put you in the ball park.
Ya I don't have the capacity to do anything over 5. Thanks for your response!
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Old 07-02-2013, 10:18 PM   #6
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Your quite welcome and happy brewing!

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Old 07-03-2013, 02:34 AM   #7
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Quote:
Originally Posted by bennie1986 View Post
Lets say I wanted to do an iipa with a OG of 1.080 and I used a starter with a stir plate, would that be enough? I guess I'm not sure how to calculate pitch rates with a starter.
I suggest you use Yeastcalc to assist you in determining how much yeast you need to pitch depending on the volume of your brew and the OG.

You can estimate the volume of yeast you have in that jar by putting same amount of liquid in another like jar and then measuring it.
From the photo it looks like you have done a good job of washing the yeast and it is likely you will have around 3 bn cells per ml of compacted yeast.

So for example if you have 50ml of yeast then you could estimate you have around 50 x 3bn = 150bn cells. Now how many of those cells are viable depends on age since fermentation was completed. Yeastcalc will estimate how many viable cells you have and guide you in what size starter to make.
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Old 07-03-2013, 03:34 AM   #8
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Quote:
Originally Posted by el_caro

I suggest you use Yeastcalc to assist you in determining how much yeast you need to pitch depending on the volume of your brew and the OG.

You can estimate the volume of yeast you have in that jar by putting same amount of liquid in another like jar and then measuring it.
From the photo it looks like you have done a good job of washing the yeast and it is likely you will have around 3 bn cells per ml of compacted yeast.

So for example if you have 50ml of yeast then you could estimate you have around 50 x 3bn = 150bn cells. Now how many of those cells are viable depends on age since fermentation was completed. Yeastcalc will estimate how many viable cells you have and guide you in what size starter to make.
Awesome info thanks!
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