Can anyone help me with some math

WVBeerBaron · Nov 15, 2009

I brewed an AG IPA at 1.068 last Wednesday. I was unsatisfied with the gravity (i love 10+ ABV brews). I boiled 1 pound out extra light DME in 4 cups of water, cooled to room temp and added it to the primary. Does anyone know how to obtain my new gravity measurement. Thank you for any help.

Yooper · Nov 15, 2009

One pound of DME would bring 5 gallons of 1.068 wort to 1.077 or so (about 44 points for a pound of DME, then divided by 5 for the five galloons). Adding a quart of water would dilute it to approximately 1.073.

So, approximately 1.073 for 5.25 gallons.

mkling · Nov 15, 2009

Assuming it's a 5 gallon batch: 68x5= 340.

1 lb of DME = 44, so new total points is 384, but your volume has increased to 5.25 gallons.

So 384/5.25 = 73.14, so your new OG is 1.073.

Hope that helps.

jamesnsw · Nov 15, 2009

Okay, let's see. BeerTools estimated the extra light DME as 44 ppg (points per gallon).

That's all the further I can go without knowing how much is in your primary originally. If it was 5 gallons even already in the fermenter, you'll now have 5.5 gallons of liquid.
The 5 gallons will have 68 ppg, so 5*68=340 + 44=388/5.25=73.9

That would mean your new gravity is 1.074.

Can anyone help me with some math

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